Add some logic to pass the correct github ref to mcp script (#1990)

.github/workflows/pytest-gpu.yaml

@@ -58,5 +58,19 @@ jobs:
         id: tests
         run: |
           set -ex
-          export PR_NUMBER=$(jq --raw-output .pull_request.number "$GITHUB_EVENT_PATH")
-          python .github/mcp/mcp_pytest.py --image '${{ inputs.container }}' --pr_number $PR_NUMBER --pytest_markers '${{ inputs.pytest-markers }}' --pytest_command '${{ inputs.pytest-command }}' --timeout ${{ inputs.mcloud-timeout }}
+
+          PR_NUMBER="$(jq --raw-output .pull_request.number "$GITHUB_EVENT_PATH")"
+          REF_ARGS=""
+
+          # Use the PR number if it exists, commit SHA for protected branches and the branch name otherwise
+          if [ -z "$PR_NUMBER" ]; then
+            if [[ "$GITHUB_REF" =~ "refs/heads/dev" || "$GITHUB_REF" =~ "refs/heads/main" || "$GITHUB_REF" =~ "refs/heads/release" ]]; then
+              REF_ARGS="--git_commit $GITHUB_SHA"
+            else
+              REF_ARGS="--git_branch $GITHUB_REF_NAME"
+            fi
+          else
+            REF_ARGS="--pr_number $PR_NUMBER"
+          fi
+
+          python .github/mcp/mcp_pytest.py --image '${{ inputs.container }}' --pytest_markers '${{ inputs.pytest-markers }}' --pytest_command '${{ inputs.pytest-command }}' --timeout ${{ inputs.mcloud-timeout }} ${REF_ARGS}