diff --git a/.github/workflows/charts-readme.yaml b/.github/workflows/charts-readme.yaml
index 4a6934c4..ea819962 100644
--- a/.github/workflows/charts-readme.yaml
+++ b/.github/workflows/charts-readme.yaml
@@ -48,6 +48,7 @@ jobs:
         with:
           fetch-depth: 0
           ref: ${{ github.head_ref }}
+          repository: ${{github.event.pull_request.head.repo.full_name}}
 
       - name: Install Kubernetes tools
         uses: yokawasa/action-setup-kube-tools@v0.8.0