diff --git a/GitHubReferences.ps1 b/GitHubReferences.ps1
new file mode 100644
index 00000000..de8d8348
--- /dev/null
+++ b/GitHubReferences.ps1
@@ -0,0 +1,442 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
+function Get-GitHubReference
+{
+<#
+    .SYNOPSIS
+        Retrieve a reference of a given GitHub repository.
+
+    .DESCRIPTION
+        Retrieve a reference of a given GitHub repository.
+        The Git repo for this module can be found here: http://aka.ms/PowerShellForGitHub
+
+    .PARAMETER OwnerName
+        Owner of the repository.
+        If not supplied here, the DefaultOwnerName configuration property value will be used.
+
+    .PARAMETER RepositoryName
+        Name of the repository.
+        If not supplied here, the DefaultRepositoryName configuration property value will be used.
+
+    .PARAMETER Uri
+        Uri for the repository.
+        The OwnerName and RepositoryName will be extracted from here instead of needing to provide
+        them individually.
+
+    .PARAMETER Reference
+        Name of the reference, for example: "heads/<branch name>" for branches and "tags/<tag name>" for tags.
+        Gets all the references (everything in the namespace, not only heads and tags) if not provided
+
+    .PARAMETER AccessToken
+        If provided, this will be used as the AccessToken for authentication with the
+        REST Api. Otherwise, will attempt to use the configured value or will run unauthenticated.
+
+    .PARAMETER NoStatus
+        If this switch is specified, long-running commands will run on the main thread
+        with no commandline status update.  When not specified, those commands run in
+        the background, enabling the command prompt to provide status information.
+        If not supplied here, the DefaultNoStatus configuration property value will be used.
+
+    .OUTPUTS
+        [PSCustomObject]
+        Details of the git reference in the given repository
+
+    .EXAMPLE
+        Get-GitHubReference -OwnerName Powershell -RepositoryName PowerShellForGitHub -Reference heads/master
+#>
+    [CmdletBinding(
+        SupportsShouldProcess,
+        DefaultParametersetName='Elements')]
+    [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSShouldProcess", "", Justification="Methods called within here make use of PSShouldProcess, and the switch is passed on to them inherently.")]
+    param(
+        [Parameter(ParameterSetName='Elements')]
+        [string] $OwnerName,
+
+        [Parameter(ParameterSetName='Elements')]
+        [string] $RepositoryName,
+
+        [Parameter(
+            Mandatory,
+            ParameterSetName='Uri')]
+        [string] $Uri,
+
+        [string] $Reference,
+
+        [string] $AccessToken,
+
+        [switch] $NoStatus
+    )
+
+    Write-InvocationLog -Invocation $MyInvocation
+
+    $elements = Resolve-RepositoryElements -BoundParameters $PSBoundParameters -DisableValidation
+    $OwnerName = $elements.ownerName
+    $RepositoryName = $elements.repositoryName
+
+    $telemetryProperties = @{
+        'OwnerName' = (Get-PiiSafeString -PlainText $OwnerName)
+        'RepositoryName' = (Get-PiiSafeString -PlainText $RepositoryName)
+        'ProvidedReference' = $PSBoundParameters.ContainsKey('Reference')
+    }
+
+    if ($OwnerName -xor $RepositoryName)
+    {
+        $message = 'You must specify both Owner Name and Repository Name.'
+        Write-Log -Message $message -Level Error
+        throw $message
+    }
+
+    if (-not [String]::IsNullOrEmpty($RepositoryName))
+    {
+        $uriFragment = "repos/$OwnerName/$RepositoryName/git/matching-refs"
+        $description =  "Getting all references for $RepositoryName"
+        if ($PSBoundParameters.ContainsKey('Reference'))
+        {
+            $uriFragment = $uriFragment + "/$Reference"
+            $description =  "Getting Reference $Reference for $RepositoryName"
+        }
+        else
+        {
+            # Add a slash at the end. Calling it with only matching-refs without the slash causes a 404
+            $uriFragment = $uriFragment + "//"
+        }
+    }
+
+    $params = @{
+        'UriFragment' = $uriFragment
+        'Description' = $description
+        'AccessToken' = $AccessToken
+        'TelemetryEventName' = $MyInvocation.MyCommand.Name
+        'TelemetryProperties' = $telemetryProperties
+        'NoStatus' = (Resolve-ParameterWithDefaultConfigurationValue -Name NoStatus -ConfigValueName DefaultNoStatus)
+    }
+
+    return Invoke-GHRestMethodMultipleResult @params
+}
+
+function New-GitHubReference
+{
+    <#
+    .SYNOPSIS
+        Create a reference in a given GitHub repository.
+
+    .DESCRIPTION
+        Create a reference in a given GitHub repository.
+        The Git repo for this module can be found here: http://aka.ms/PowerShellForGitHub
+
+    .PARAMETER OwnerName
+        Owner of the repository.
+        If not supplied here, the DefaultOwnerName configuration property value will be used.
+
+    .PARAMETER RepositoryName
+        Name of the repository.
+        If not supplied here, the DefaultRepositoryName configuration property value will be used.
+
+    .PARAMETER Uri
+        Uri for the repository.
+        The OwnerName and RepositoryName will be extracted from here instead of needing to provide
+        them individually.
+
+    .PARAMETER Reference
+        The name of the reference to be created (eg: heads/master or tags/myTag)
+
+    .PARAMETER Sha
+        The SHA1 value for the reference to be created
+
+    .PARAMETER AccessToken
+        If provided, this will be used as the AccessToken for authentication with the
+        REST Api.  Otherwise, will attempt to use the configured value or will run unauthenticated.
+
+    .PARAMETER NoStatus
+        If this switch is specified, long-running commands will run on the main thread
+        with no commandline status update.  When not specified, those commands run in
+        the background, enabling the command prompt to provide status information.
+        If not supplied here, the DefaultNoStatus configuration property value will be used.
+
+    .OUTPUTS
+        [PSCustomObject]
+        Details of the git reference created. Throws an Exception if the reference already exists
+
+    .EXAMPLE
+        New-GitHubReference -OwnerName Powershell -RepositoryName PowerShellForGitHub -Reference heads/master -Sha aa218f56b14c9653891f9e74264a383fa43fefbd
+    #>
+    [CmdletBinding(
+        SupportsShouldProcess,
+        DefaultParametersetName='Elements')]
+    [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSShouldProcess", "", Justification="Methods called within here make use of PSShouldProcess, and the switch is passed on to them inherently.")]
+    param(
+        [Parameter(ParameterSetName='Elements')]
+        [string] $OwnerName,
+
+        [Parameter(ParameterSetName='Elements')]
+        [string] $RepositoryName,
+
+        [Parameter(
+            Mandatory,
+            ParameterSetName='Uri')]
+        [string] $Uri,
+
+        [Parameter(Mandatory)]
+        [string] $Reference,
+
+        [Parameter(Mandatory)]
+        [string] $Sha,
+
+        [string] $AccessToken,
+
+        [switch] $NoStatus
+    )
+
+    Write-InvocationLog -Invocation $MyInvocation
+
+    $elements = Resolve-RepositoryElements -BoundParameters $PSBoundParameters -DisableValidation
+    $OwnerName = $elements.ownerName
+    $RepositoryName = $elements.repositoryName
+
+    $telemetryProperties = @{
+        'OwnerName' = (Get-PiiSafeString -PlainText $OwnerName)
+        'RepositoryName' = (Get-PiiSafeString -PlainText $RepositoryName)
+    }
+
+    if ($OwnerName -xor $RepositoryName)
+    {
+        $message = 'You must specify both Owner Name and Repository Name.'
+        Write-Log -Message $message -Level Error
+        throw $message
+    }
+
+    $uriFragment = "repos/$OwnerName/$RepositoryName/git/refs"
+    $description =  "Creating Reference $Reference for $RepositoryName from SHA $Sha"
+
+    $hashBody = @{
+        'ref' = "refs/" + $Reference
+        'sha' = $Sha
+    }
+
+    $params = @{
+        'UriFragment' = $uriFragment
+        'Method' = 'Post'
+        'Body' = (ConvertTo-Json -InputObject $hashBody)
+        'Description' = $description
+        'AccessToken' = $AccessToken
+        'TelemetryEventName' = $MyInvocation.MyCommand.Name
+        'TelemetryProperties' = $telemetryProperties
+        'NoStatus' = (Resolve-ParameterWithDefaultConfigurationValue -Name NoStatus -ConfigValueName DefaultNoStatus)
+    }
+
+    return Invoke-GHRestMethod @params
+}
+
+function Update-GitHubReference
+{
+    <#
+    .SYNOPSIS
+        Update a reference in a given GitHub repository.
+
+    .DESCRIPTION
+        Update a reference in a given GitHub repository.
+        The Git repo for this module can be found here: http://aka.ms/PowerShellForGitHub
+
+    .PARAMETER OwnerName
+        Owner of the repository.
+        If not supplied here, the DefaultOwnerName configuration property value will be used.
+
+    .PARAMETER RepositoryName
+        Name of the repository.
+        If not supplied here, the DefaultRepositoryName configuration property value will be used.
+
+    .PARAMETER Uri
+        Uri for the repository.
+        The OwnerName and RepositoryName will be extracted from here instead of needing to provide
+        them individually.
+
+    .PARAMETER Reference
+        The name of the reference to be created (eg: heads/master or tags/myTag)
+    
+    .PARAMETER Sha
+        The updated SHA1 value to be set for this reference
+    
+    .PARAMETER Force
+        Indicates whether to force the update. If not set it will ensure that the update is a fast-forward update.
+
+    .PARAMETER AccessToken
+        If provided, this will be used as the AccessToken for authentication with the
+        REST Api.  Otherwise, will attempt to use the configured value or will run unauthenticated.
+
+    .PARAMETER NoStatus
+        If this switch is specified, long-running commands will run on the main thread
+        with no commandline status update.  When not specified, those commands run in
+        the background, enabling the command prompt to provide status information.
+        If not supplied here, the DefaultNoStatus configuration property value will be used.
+
+    .EXAMPLE
+        Update-GitHubReference -OwnerName Powershell -RepositoryName PowerShellForGitHub -Reference heads/master -Sha aa218f56b14c9653891f9e74264a383fa43fefbd
+    #>
+    [CmdletBinding(
+        SupportsShouldProcess,
+        DefaultParametersetName='Elements')]
+    [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSShouldProcess", "", Justification="Methods called within here make use of PSShouldProcess, and the switch is passed on to them inherently.")]
+    param(
+        [Parameter(ParameterSetName='Elements')]
+        [string] $OwnerName,
+
+        [Parameter(ParameterSetName='Elements')]
+        [string] $RepositoryName,
+
+        [Parameter(
+            Mandatory,
+            ParameterSetName='Uri')]
+        [string] $Uri,
+
+        [Parameter(Mandatory)]
+        [string] $Reference,
+
+        [Parameter(Mandatory)]
+        [string] $Sha,
+
+        [switch] $Force,
+
+        [string] $AccessToken,
+
+        [switch] $NoStatus
+    )
+
+    Write-InvocationLog -Invocation $MyInvocation
+
+    $elements = Resolve-RepositoryElements -BoundParameters $PSBoundParameters -DisableValidation
+    $OwnerName = $elements.ownerName
+    $RepositoryName = $elements.repositoryName
+
+    $telemetryProperties = @{
+        'OwnerName' = (Get-PiiSafeString -PlainText $OwnerName)
+        'RepositoryName' = (Get-PiiSafeString -PlainText $RepositoryName)
+    }
+
+    if ($OwnerName -xor $RepositoryName)
+    {
+        $message = 'You must specify both Owner Name and Repository Name.'
+        Write-Log -Message $message -Level Error
+        throw $message
+    }
+
+    $uriFragment = "repos/$OwnerName/$RepositoryName/git/refs/$Reference"
+    $description =  "Updating SHA for Reference $Reference in $RepositoryName to $Sha"
+
+    $hashBody = @{
+        'force' = $Force.IsPresent
+        'sha' = $Sha
+    }
+
+    $params = @{
+        'UriFragment' = $uriFragment
+        'Method' = 'Patch'
+        'Body' = (ConvertTo-Json -InputObject $hashBody)
+        'Description' = $description
+        'AccessToken' = $AccessToken
+        'TelemetryEventName' = $MyInvocation.MyCommand.Name
+        'TelemetryProperties' = $telemetryProperties
+        'NoStatus' = (Resolve-ParameterWithDefaultConfigurationValue -Name NoStatus -ConfigValueName DefaultNoStatus)
+    }
+
+    return Invoke-GHRestMethod @params
+}
+
+function Remove-GitHubReference
+{
+    <#
+    .SYNOPSIS
+        Delete a reference in a given GitHub repository.
+
+    .DESCRIPTION
+        Delete a reference in a given GitHub repository.
+        The Git repo for this module can be found here: http://aka.ms/PowerShellForGitHub
+
+    .PARAMETER OwnerName
+        Owner of the repository.
+        If not supplied here, the DefaultOwnerName configuration property value will be used.
+
+    .PARAMETER RepositoryName
+        Name of the repository.
+        If not supplied here, the DefaultRepositoryName configuration property value will be used.
+
+    .PARAMETER Uri
+        Uri for the repository.
+        The OwnerName and RepositoryName will be extracted from here instead of needing to provide
+        them individually.
+
+    .PARAMETER Reference
+        The name of the reference to be deleted (eg: heads/master)
+
+    .PARAMETER AccessToken
+        If provided, this will be used as the AccessToken for authentication with the
+        REST Api.  Otherwise, will attempt to use the configured value or will run unauthenticated.
+
+    .PARAMETER NoStatus
+        If this switch is specified, long-running commands will run on the main thread
+        with no commandline status update.  When not specified, those commands run in
+        the background, enabling the command prompt to provide status information.
+        If not supplied here, the DefaultNoStatus configuration property value will be used.
+
+    .EXAMPLE
+        Remove-GitHubReference -OwnerName Powershell -RepositoryName PowerShellForGitHub -Reference heads/master
+    #>
+    [CmdletBinding(
+        SupportsShouldProcess,
+        DefaultParametersetName='Elements')]
+    [Alias('Delete-GitHubReference')]
+    [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSShouldProcess", "", Justification="Methods called within here make use of PSShouldProcess, and the switch is passed on to them inherently.")]
+    param(
+        [Parameter(ParameterSetName='Elements')]
+        [string] $OwnerName,
+
+        [Parameter(ParameterSetName='Elements')]
+        [string] $RepositoryName,
+
+        [Parameter(
+            Mandatory,
+            ParameterSetName='Uri')]
+        [string] $Uri,
+
+        [Parameter(Mandatory)]
+        [string] $Reference,
+
+        [string] $AccessToken,
+
+        [switch] $NoStatus
+    )
+
+    Write-InvocationLog -Invocation $MyInvocation
+
+    $elements = Resolve-RepositoryElements -BoundParameters $PSBoundParameters -DisableValidation
+    $OwnerName = $elements.ownerName
+    $RepositoryName = $elements.repositoryName
+
+    $telemetryProperties = @{
+        'OwnerName' = (Get-PiiSafeString -PlainText $OwnerName)
+        'RepositoryName' = (Get-PiiSafeString -PlainText $RepositoryName)
+    }
+
+    if ($OwnerName -xor $RepositoryName)
+    {
+        $message = 'You must specify both Owner Name and Repository Name.'
+        Write-Log -Message $message -Level Error
+        throw $message
+    }
+
+    $uriFragment = "repos/$OwnerName/$RepositoryName/git/refs/$Reference"
+    $description =  "Deleting Reference $Reference from repository $RepositoryName"
+
+    $params = @{
+        'UriFragment' = $uriFragment
+        'Method' = 'Delete'
+        'Body' = (ConvertTo-Json -InputObject $hashBody)
+        'Description' = $description
+        'AccessToken' = $AccessToken
+        'TelemetryEventName' = $MyInvocation.MyCommand.Name
+        'TelemetryProperties' = $telemetryProperties
+        'NoStatus' = (Resolve-ParameterWithDefaultConfigurationValue -Name NoStatus -ConfigValueName DefaultNoStatus)
+    }
+
+    return Invoke-GHRestMethod @params
+}
\ No newline at end of file
diff --git a/PowerShellForGitHub.psd1 b/PowerShellForGitHub.psd1
index 31c82786..ce257da3 100644
--- a/PowerShellForGitHub.psd1
+++ b/PowerShellForGitHub.psd1
@@ -32,6 +32,7 @@
         'GitHubMiscellaneous.ps1',
         'GitHubOrganizations.ps1',
         'GitHubPullRequests.ps1',
+        'GitHubReferences.ps1',
         'GitHubReleases.ps1',
         'GitHubRepositories.ps1',
         'GitHubRepositoryForks.ps1',
@@ -67,6 +68,7 @@
         'Get-GitHubPathTraffic',
         'Get-GitHubPullRequest',
         'Get-GitHubRateLimit',
+        'Get-GitHubReference',
         'Get-GitHubReferrerTraffic',
         'Get-GitHubRelease',
         'Get-GitHubRepository',
@@ -94,6 +96,7 @@
         'New-GitHubLabel',
         'New-GitHubMilestone',
         'New-GitHubPullRequest',
+        'New-GithubReference',
         'New-GitHubRepository',
         'New-GitHubRepositoryFork',
         'Remove-GithubAssignee',
@@ -101,6 +104,7 @@
         'Remove-GitHubIssueLabel',
         'Remove-GitHubLabel',
         'Remove-GitHubMilestone',
+        'Remove-GitHubReference',
         'Remove-GitHubRepository',
         'Rename-GitHubRepository',
         'Reset-GitHubConfiguration',
@@ -120,6 +124,7 @@
         'Update-GitHubCurrentUser',
         'Update-GitHubIssue',
         'Update-GitHubLabel',
+        'Update-GithubReference',
         'Update-GitHubRepository'
     )
 
@@ -127,6 +132,7 @@
         'Delete-GitHubComment',
         'Delete-GitHubLabel',
         'Delete-GitHubMilestone',
+        'Delete-GitHubReference',
         'Delete-GitHubRepository',
         'Get-GitHubBranch',
         'Transfer-GitHubRepositoryOwnership'
diff --git a/Tests/GitHubReferences.Tests.ps1 b/Tests/GitHubReferences.Tests.ps1
new file mode 100644
index 00000000..b1a32e3d
--- /dev/null
+++ b/Tests/GitHubReferences.Tests.ps1
@@ -0,0 +1,184 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
+<#
+.Synopsis
+   Tests for GitHubReferences.ps1 module
+#>
+
+# This is common test code setup logic for all Pester test files
+$moduleRootPath = Split-Path -Path $PSScriptRoot -Parent
+. (Join-Path -Path $moduleRootPath -ChildPath 'Tests\Common.ps1')
+
+try
+{
+    if ($accessTokenConfigured)
+    {
+        Describe 'Create a new reference(branch) in repository' {
+            $repositoryName = [Guid]::NewGuid()
+            $repo = New-GitHubRepository -RepositoryName $repositoryName -AutoInit
+            $masterRefName = "heads/master"
+            $existingref = Get-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference $masterRefName
+            $sha = $existingref.object.sha
+
+            Context 'On creating a valid reference in a new repository from a given SHA' {
+                $refName = "heads/" + [Guid]::NewGuid().ToString()
+                $result = New-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference $refName -Sha $sha
+
+                It 'Should successfully create the reference' {
+                    $result.ref | Should Be "refs/$refName"
+                }
+            }
+
+            Context 'On creating a valid reference in a new repository (specified by Uri) from a given SHA' {
+                $refName = "heads/" + [Guid]::NewGuid().ToString()
+                $result = New-GitHubReference -Uri $repo.svn_url -Reference $refName -Sha $sha
+
+                It 'Should successfully create the reference' {
+                    $result.ref | Should Be "refs/$refName"
+                }
+            }
+
+            Context 'On creating an existing reference in a new repository from a given SHA' {
+                It 'Should throw an Exception' {
+                    { New-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference $masterRefName -Sha $sha } | Should Throw
+                }
+            }
+
+            Context 'On creating an existing reference in a new repository (specified by Uri) from a given SHA' {
+                It 'Should throw an exception' {
+                    { New-GitHubReference -Uri $repo.svn_url -Reference $masterRefName -Sha $sha }  | Should Throw
+                }
+            }
+
+            $null = Remove-GitHubRepository -OwnerName $ownerName -RepositoryName $repositoryName
+        }
+
+        Describe 'Getting a reference(branch) from repository' {
+            $repositoryName = [Guid]::NewGuid()
+            $repo = New-GitHubRepository -RepositoryName $repositoryName -AutoInit
+            $masterRefName = "heads/master"
+            $randomRefName = "heads/$([Guid]::NewGuid())"
+
+            Context 'On getting a valid reference from a new repository' {
+                $reference = Get-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference $masterRefName
+
+                It 'Should return details of the reference' {
+                    $reference.ref | Should be "refs/$masterRefName"
+                }
+            }
+
+            Context 'On getting an invalid reference from a new repository' {
+                $reference = Get-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference $randomRefName
+
+                It 'Should not return any details' {
+                    $reference | Should be $null
+                }
+            }
+
+            Context 'On getting a valid reference using Uri from a new repository' {
+                $reference = Get-GitHubReference -Uri $repo.svn_url -Reference $masterRefName
+
+                It 'Should return details of the reference' {
+                    $reference.ref | Should be "refs/$masterRefName"
+                }
+            }
+
+            Context 'On getting an invalid reference using Uri from a new repository' {
+                $reference = Get-GitHubReference -Uri $repo.svn_url -Reference $randomRefName
+
+                It 'Should not return any details' {
+                    $reference | Should be $null
+                }
+            }
+
+            $null = Remove-GitHubRepository -OwnerName $ownerName -RepositoryName $repositoryName
+        }
+
+        Describe 'Getting all references from repository' {
+            $repositoryName = [Guid]::NewGuid()
+            $repo = New-GitHubRepository -RepositoryName $repositoryName -AutoInit
+            $masterRefName = "heads/master"
+            $secondRefName = "heads/branch1"
+            $existingref = Get-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference $masterRefName
+            $sha = $existingref.object.sha
+            New-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference $secondRefName -Sha $sha
+            $refNames = @("refs/$masterRefName", "refs/$secondRefName")
+
+            Context 'On getting all references from a new repository' {
+                $reference = Get-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName
+
+                It 'Should return all references' {
+                    ($reference.ref | Where-Object {$refNames -Contains $_}).Count | Should be $refNames.Count
+                }
+            }
+
+            Context 'On getting all references using Uri from a new repository' {
+                $reference = Get-GitHubReference -Uri $repo.svn_url
+
+                It 'Should return all references' {
+                    ($reference.ref | Where-Object {$refNames -Contains $_}).Count | Should be $refNames.Count
+                }
+            }
+
+            $null = Remove-GitHubRepository -OwnerName $ownerName -RepositoryName $repositoryName
+        }
+
+        Describe 'Delete a reference(branch) from repository' {
+            $repositoryName = [Guid]::NewGuid()
+            New-GitHubRepository -RepositoryName $repositoryName -AutoInit
+
+            Context 'On deleting a newly created reference in a new repository' {
+                $refname = "heads/myRef"
+                $existingref = Get-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference "heads/master"
+                $sha = $existingref.object.sha
+                New-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference $refname -Sha $sha
+                Remove-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference $refname
+
+                It 'Should not return any details when the reference is queried' {
+                    Get-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference $refname |
+                    Should be $null
+                }
+
+                It 'Should throw an exception when the same reference is deleted again' {
+                    { Remove-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference $refname } |
+                    Should Throw
+                }
+            }
+
+            Context 'On deleting an invalid reference from a new repository' {
+                It 'Should throw an exception' {
+                    { Remove-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference "heads/$([Guid]::NewGuid())" } |
+                    Should Throw
+                }
+            }
+            $null = Remove-GitHubRepository -OwnerName $ownerName -RepositoryName $repositoryName
+        }
+
+        Describe 'Update a reference(branch) in repository' {
+            $repositoryName = [Guid]::NewGuid()
+            New-GitHubRepository -RepositoryName $repositoryName -AutoInit
+            $refname = "heads/myRef"
+            $existingref = Get-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference "heads/master"
+            $sha = $existingref.object.sha
+            New-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference $refname -Sha $sha
+            Context 'On updating a newly created reference to a different SHA' {
+                It 'Should throw an exception if the SHA is invalid' {
+                    { Update-GitHubReference -OwnerName $ownerName -RepositoryName $repositoryName -Reference $refname -Sha "1234" } |
+                    Should Throw
+                }
+            }
+            $null = Remove-GitHubRepository -OwnerName $ownerName -RepositoryName $repositoryName
+        }
+    }
+}
+catch
+{
+    if (Test-Path -Path $script:originalConfigFile -PathType Leaf)
+    {
+        # Restore the user's configuration to its pre-test state
+        Restore-GitHubConfiguration -Path $script:originalConfigFile
+        $script:originalConfigFile = $null
+    }
+}
+