ci(compile-requirements): fix push to PR branch

Author: tigattack

.github/workflows/compile-requirements.yml

@@ -23,6 +23,7 @@ jobs:
         uses: actions/checkout@v5
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
+          ref: ${{ github.head_ref || github.ref }}
 
       - name: Set up Python
         uses: actions/setup-python@v6