ci: update ci.yml

Author: zkochan

.github/workflows/ci.yml

@@ -26,8 +26,6 @@ jobs:
       uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node }}
-    - name: checkout main
-      run: git branch -f main origin/main
     - name: Install pnpm
       uses: pnpm/action-setup@v4
       with: