diff --git a/.github/workflows/upstream-commit-check.yml b/.github/workflows/upstream-commit-check.yml
index ae25072b95223..e95c4e904f8e4 100644
--- a/.github/workflows/upstream-commit-check.yml
+++ b/.github/workflows/upstream-commit-check.yml
@@ -16,12 +16,14 @@ jobs:
       - name: Checkout PR branch
         uses: actions/checkout@v4
         with:
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
           fetch-depth: 0
           ref: ${{ github.head_ref }}
 
       - name: Checkout base branch
         run: |
-          git fetch origin ${{ github.base_ref }}:${{ github.base_ref }}
+          git remote add base_repo https://github.com/${{ github.repository }}.git
+          git fetch base_repo ${{ github.base_ref }}:${{ github.base_ref }}
 
       - name: Download check_kernel_commits.py
         run: |