diff --git a/.github/workflows/sync.yml b/.github/workflows/sync.yml
index 0a48562..1a01684 100644
--- a/.github/workflows/sync.yml
+++ b/.github/workflows/sync.yml
@@ -7,6 +7,7 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    if: github.repository == 'doocs/advanced-java'
     steps:
       - name: Sync To Gitee
         uses: wearerequired/git-mirror-action@master