diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cc81b2c196a0..8623fafe9d75 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -53,6 +53,12 @@ jobs:
       docs: ${{ steps.filter.outputs.docs }}
       non_docs: ${{ steps.filter.outputs.non_docs }}
     steps:
+      - uses: actions/checkout@v5
+        with:
+          ref: |
+            ${{ github.event_name == 'repository_dispatch' &&
+                github.event.client_payload.pull_request.head.sha == github.event.client_payload.slash_command.args.named.sha &&
+                format('refs/pull/{0}/head', github.event.client_payload.pull_request.number) || '' }}
       - uses: dorny/paths-filter@de90cc6fb38fc0963ad72b210f1f284cd68cea36 # v3
         id: filter
         with: