diff --git a/action.yml b/action.yml
index e23b3fdc..a7023642 100644
--- a/action.yml
+++ b/action.yml
@@ -126,12 +126,11 @@ runs:
       if: ${{ env.SHOULD_CHECKOUT == 'true' }}
       shell: bash
       run: |
-        ALL=2147483647
         cd gitstream && cd repo
         git config checkout.defaultRemote origin
-        git fetch --deepen=$ALL origin $'${{ steps.safe-strings.outputs.base_ref }}'
+        git fetch --shallow-since="6 months ago" 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 }}'
+        git fetch --shallow-since="6 months ago" upstream $'${{ steps.safe-strings.outputs.head_ref }}'
         git checkout -b $'upstream/${{ steps.safe-strings.outputs.head_ref}}' $'upstream/${{ steps.safe-strings.outputs.head_ref}}'
         git checkout $'${{ steps.safe-strings.outputs.base_ref }}'
         git checkout $'${{ steps.safe-strings.outputs.head_ref }}'