Checkout demo-page in all cases

.github/workflows/demo-build.yml

@@ -56,8 +56,17 @@ jobs:
                     git remote add origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository_owner }}/ramp4-pcar4
                     git push -u origin demo-page
                     echo "Orphan branch 'demo-page' has been created and pushed to origin."
+                    cd ../
+                    # Will be properly checked out in the next step
+                    rm -rf demo-page
                 fi
 
+            - uses: actions/checkout@v4
+              with:
+                ref: demo-page
+                path: demo-page
+                fetch-depth: 0
+
             - name: Remove the old demo if it exists and make docs folder
               run: |
                 rm -rf demo-page/${{ github.ref_name }}