From 61cec92f6c55f2ee40615770e2f25a7443a175b6 Mon Sep 17 00:00:00 2001
From: Martin Fenner <martin.fenner@datacite.org>
Date: Wed, 10 Mar 2021 15:39:20 +0100
Subject: [PATCH] fix json error in pull requests

---
 .github/workflows/pull_request.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index d7012598b..55e857cea 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -46,6 +46,8 @@ jobs:
       AWS_REGION: ${{ secrets.AWS_REGION }}
     steps:
       - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
       - name: Set up Ruby 2.6
         uses: actions/setup-ruby@v1
         with: