diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index c1e5474..9a2e1a4 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -23,8 +23,12 @@ jobs:
         language: [ java ]
 
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
+      - uses: actions/checkout@v4
+        if: github.event_name == 'push'
+      - uses: actions/checkout@v4
+        with:
+          ref: "${{ github.event.pull_request.merge_commit_sha }}"
+        if: github.event_name == 'pull_request_target'
 
       - name: Setup Java
         uses: actions/setup-java@v4