update gh action

.github/workflows/fetch-remark-metadata.yml

@@ -10,6 +10,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          ref: master
       - name: set up Python
         uses: actions/setup-python@v5
         with:
@@ -24,6 +26,7 @@ jobs:
         run: |
           git config --global user.name github-actions
           git config --global user.email [email protected]
-          git checkout -b gh-pages
+          git checkout --orphan gh-pages
           git add .
           git commit -m "autopull REMARKs $(date)"
+          git push --force origin gh-pages