diff --git a/.github/workflows/package_repo_setup_and_test.yml b/.github/workflows/package_repo_setup_and_test.yml
index 8991f0ac..52974115 100644
--- a/.github/workflows/package_repo_setup_and_test.yml
+++ b/.github/workflows/package_repo_setup_and_test.yml
@@ -53,7 +53,6 @@ jobs:
     - name: Checkout occlum src code
       uses: actions/checkout@v2
       with:
-        ref: 2204-apt
         path: occlum
 
     - name: Checkout target occlum-package-repo