diff --git a/.github/workflows/jsdoc.yml b/.github/workflows/jsdoc.yml
index 52ead9a..52bc26f 100644
--- a/.github/workflows/jsdoc.yml
+++ b/.github/workflows/jsdoc.yml
@@ -22,6 +22,8 @@ jobs:
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.head.ref }}
 
       - name: Set up Node.js
         uses: actions/setup-node@v2