Update check-pr.yml

.github/workflows/check-pr.yml

@@ -20,6 +20,12 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+          fetch-depth: 1 # 0 if you want to push to repo
+
       - name: Python set up
         uses: actions/setup-python@v5
         with:
@@ -41,12 +47,6 @@ jobs:
             hpmor.pdf
           key: ${{ runner.os }}-latex-cache
 
-      - name: Checkout repository
-        uses: actions/checkout@v4
-        with:
-          persist-credentials: false
-          fetch-depth: 1 # 0 if you want to push to repo
-
       - name: check 1
         run: |
           ls -l hpmor.*