diff --git a/.github/workflows/sync_mirrors_git.yml b/.github/workflows/sync_mirrors_git.yml
index cc06211f..d8dba5e6 100644
--- a/.github/workflows/sync_mirrors_git.yml
+++ b/.github/workflows/sync_mirrors_git.yml
@@ -1,8 +1,10 @@
 name: Sync to Mirror Repositories
 
 on:
-  push:
-    branches: [ main ]
+  workflow_run:
+    workflows: ["Build repo.json"]
+    types:
+      - completed  # 当第一个工作流完成时触发
   workflow_dispatch:  # 允许手动触发
 
 jobs:
@@ -44,4 +46,4 @@ jobs:
     - name: Report sync status
       if: always()
       run: |
-        echo "Sync operation completed. Check individual steps for any errors."
\ No newline at end of file
+        echo "Sync operation completed. Check individual steps for any errors."