diff --git a/.github/workflows/internal_test.yml b/.github/workflows/internal_test.yml
index dac3b5bd..625bcc9a 100644
--- a/.github/workflows/internal_test.yml
+++ b/.github/workflows/internal_test.yml
@@ -15,6 +15,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
         with:
+          ref: main
           persist-credentials: true
           fetch-depth: 0
           token: ${{ secrets.AUTO_GITHUB_PAT_TOKEN }}