diff --git a/.github/workflows/auto-merge.yml b/.github/workflows/auto-merge.yml
index 24cd4555157..75fd65121f4 100644
--- a/.github/workflows/auto-merge.yml
+++ b/.github/workflows/auto-merge.yml
@@ -28,6 +28,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+        with:
+          ref: branch-0.2 # force to fetch from latest upstream instead of PR ref
 
       - name: auto-merge job
         uses: ./.github/workflows/auto-merge