diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index f73f6642d4..bb2235eb23 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -26,6 +26,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           # sometimes checkout action doesn't result in clean directory?
+          fetch-depth: 0
           ref: ${{ github.event.pull_request.head.sha || github.ref }}
           submodules: 'recursive'
       - run: git status --ignored