Fix 'fatal: You are not currently on a branch'

.github/workflows/update-submodule-files.yml

@@ -26,9 +26,11 @@ jobs:
         run: python update_repo.py
 
       - name: Commit and push changes
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           git config --global user.name 'github-actions[bot]'
           git config --global user.email 'github-actions[bot]@users.noreply.github.com'
           git add .
           git commit -m "Update files based on submodule changes"
-          git push
+          git push origin HEAD:${{ github.event.pull_request.head.ref }}