Update update.yml

.github/workflows/update.yml

@@ -22,6 +22,10 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
 
+      - name: Fetch Branch
+        continue-on-error: true
+        run: git fetch origin ${{ github.event.client_payload.ref }}
+
       - name: Checkout Branch
         run: git checkout ${{ github.event.client_payload.ref }} || git checkout -b ${{ github.event.client_payload.ref }}
 
@@ -55,7 +59,6 @@ jobs:
         run: |
           git config --global user.email "[email protected]"
           git config --global user.name "${{ github.actor }}"
-          git pull
           git add kitex_gen
           git commit -m "${{ github.event.client_payload.commit_msg }}"
           git push origin ${{ github.event.client_payload.ref }}