diff --git a/.github/workflows/pr-smoke-test.yml b/.github/workflows/pr-smoke-test.yml
index 124c0fcb4511..af1100bb83fa 100644
--- a/.github/workflows/pr-smoke-test.yml
+++ b/.github/workflows/pr-smoke-test.yml
@@ -33,11 +33,13 @@ jobs:
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # pin@v4
         with:
           ref: ${{ github.event.inputs.branch || github.ref }}
+          fetch-depth: 0
 
       - name: Check for code changes
         uses: dorny/paths-filter@de90cc6fb38fc0963ad72b210f1f284cd68cea36 # pin@v3
         id: filter
         with:
+          base: ${{ github.event.before || github.event.pull_request.base.sha }}
           filters: |
             code:
               - '!documentation/**'