update redirect checker

.github/workflows/pull-request.yaml

@@ -129,12 +129,15 @@ jobs:
       - name: image-check
         run: make -C docs/ imagecheck
 
-  check-rename:
+  check-redirect:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository  
         uses: actions/checkout@v3
 
+      - name: Fetch origin/main
+        run: git fetch origin main --depth=1
+
       - name: Python Setup
         uses: actions/setup-python@v4
         with:
@@ -144,5 +147,5 @@ jobs:
       - name: Python Install Dependencies
         run: pip install -r docs/requirements.txt
 
-      - name: check-rename
+      - name: check-redirect
         run: make -C docs/ rediraffecheckdiff