fix: Order of git fetch and checkout

.github/workflows/gh-pages-cleanup.yaml

@@ -16,10 +16,10 @@ jobs:
       - name: Delete directory in gh-pages
         if: github.event.ref_type == 'branch'
         run: |
+          git fetch --all
+          git checkout gh-pages
           branchName=$(echo "${{ github.event.ref }}" | sed -e 's,^refs/heads/,,')
           if [ -d "./.unlighthouse/${branchName}" ]; then
-            git fetch --all
-            git checkout gh-pages
             git rm -rf --ignore-unmatch "${branchName}"
             git commit -m "Cleanup directory for deleted branch ${branchName}"
             git push origin gh-pages