diff --git a/action.yml b/action.yml
index 9e09661e..e2ab1603 100644
--- a/action.yml
+++ b/action.yml
@@ -132,6 +132,7 @@ runs:
       run: |
         ALL=2147483647
         cd gitstream && cd repo
+        git config checkout.defaultRemote origin
         git fetch --deepen=$ALL origin $'${{ steps.safe-strings.outputs.base_ref }}'
         git remote add upstream $'${{ steps.safe-strings.outputs.url }}'
         git fetch --deepen=$ALL upstream $'${{ steps.safe-strings.outputs.head_ref }}'