diff --git a/.github/workflows/spend-logs-guard.yml b/.github/workflows/spend-logs-guard.yml
index 0c217f5c2d3..80a503679ec 100644
--- a/.github/workflows/spend-logs-guard.yml
+++ b/.github/workflows/spend-logs-guard.yml
@@ -23,6 +23,7 @@ jobs:
     steps:
       - uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4.3.0
         with:
+          ref: ${{ github.event.pull_request.base.ref }}
           persist-credentials: false
       - name: Fetch the pull request head, its merge base and its reviews
         id: revisions
@@ -34,7 +35,7 @@ jobs:
         run: |
           merge_base="$(gh api "repos/${GITHUB_REPOSITORY}/compare/${BASE_SHA}...${HEAD_SHA}" --jq '.merge_base_commit.sha')"
           git fetch --no-tags --depth=1 origin "$merge_base" "$HEAD_SHA"
-          gh api "repos/${GITHUB_REPOSITORY}/pulls/${PR_NUMBER}/reviews" --paginate --slurp --jq 'add' > "$RUNNER_TEMP/reviews.json"
+          gh api "repos/${GITHUB_REPOSITORY}/pulls/${PR_NUMBER}/reviews" --paginate --slurp | jq 'add // []' > "$RUNNER_TEMP/reviews.json"
           echo "merge_base=$merge_base" >> "$GITHUB_OUTPUT"
       - name: Set up uv
         uses: ./.github/actions/setup-uv-with-retries