bug: Changing branch after current one is deleted reports an error

[kristijanhusak]

Did you check docs and existing issues?

• I have read all the lazy.nvim docs
• I have searched the existing issues of lazy.nvim
• I have searched the existing issues of plugins related to this issue

Neovim version (nvim -v)

NVIM v0.10.0-dev-1913041

Operating system/version

Linux

Describe the bug

I was using v3 branch of https://github.com/lukas-reineke/indent-blankline.nvim until Lukas released it officially. Today I wanted to go back to master branch, but I wasn't able to do that because he deleted the v3 branch, and Lazy now stucks on attempting to fetch some information about deleted branch.

Here's a screenshot:

And my config for the plugin:

return {
  'lukas-reineke/indent-blankline.nvim',
  -- behaves same with and without a branch
  -- branch = 'master',
  event = 'VeryLazy',
  config = function()
    require('ibl').setup()
  end,
}

Git status in the plugin directory:

Steps To Reproduce

Since this one requires remote changes to a plugin to be tested, I'll write steps as you would do it with some of your plugins:

1. Create a branch test-branch on https://github.com/folke/tokyonight.nvim, push it to remote
2. Update your local config to point to that branch, run Lazy sync
3. Go to github and delete the branch
4. Remove branch option from your init.lua configuration or set it to some other existing branch like main
5. Do Lazy sync
6. You get an error fatal: couldn't find remote ref refs/heads/test-branch

Expected Behavior

I would expect just to switch to a new branch.

Repro

-- DO NOT change the paths and don't remove the colorscheme
local root = vim.fn.fnamemodify("./.repro", ":p")

-- set stdpaths to use .repro
for _, name in ipairs({ "config", "data", "state", "cache" }) do
  vim.env[("XDG_%s_HOME"):format(name:upper())] = root .. "/" .. name
end

-- bootstrap lazy
local lazypath = root .. "/plugins/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
  vim.fn.system({ "git", "clone", "--filter=blob:none", "https://github.com/folke/lazy.nvim.git", lazypath, })
end
vim.opt.runtimepath:prepend(lazypath)

-- install plugins
local plugins = {
  {
    "folke/tokyonight.nvim",
    branch = "test-branch"
  },
   
}
require("lazy").setup(plugins, {
  root = root .. "/plugins",
})

vim.cmd.colorscheme("tokyonight")
-- add anything else here

[folke]

Press x on the plugin and then i

[kristijanhusak]

Yeah, I forgot to mention the workaround. I just thought it was something that should happen automatically.

Thanks!