Explicitly specifying the PR branch when pushing (it's already doing that, since actions/checkout will set the upstream correctly)

Author: steve-calvert-glean

.github/workflows/patch-speakeasy-pr.yml

@@ -33,4 +33,4 @@ jobs:
 
           git add src/glean/__init__.py
           git commit -m "ci: ensure extend_path lines in glean/__init__.py" || echo "No changes to commit"
-          git push 
+          git push origin HEAD:${{ github.head_ref }}