Update gh-pages.yml

Author: hweifluids

.github/workflows/gh-pages.yml

@@ -34,6 +34,11 @@ jobs:
       - name: Build HTML
         run: sphinx-build -b html source build/html
 
+      - name: Clean up nested Git metadata
+        run: |
+          find build/html -type d -name .git -prune -exec rm -rf {} +
+
+
       - name: Deploy to gh-pages
         uses: peaceiris/actions-gh-pages@v4
         with: