diff --git a/tools/jenkins/run_jenkins.sh b/tools/jenkins/run_jenkins.sh
index 3fa5914bc11e9239c3ca5780126669207188eb77..a754015f4003fbcdbd5d52ebdb99bbbb87b048e7 100755
--- a/tools/jenkins/run_jenkins.sh
+++ b/tools/jenkins/run_jenkins.sh
@@ -44,7 +44,7 @@ then
   if [ "$ghprbPullId" != "" ]
   then
     # if we are building a pull request, grab corresponding refs.
-    FETCH_PULL_REQUEST_CMD="&& git fetch $GIT_URL +refs/pull/$ghprbPullId:refs/remotes/origin/pr/$ghprbPullId"
+    FETCH_PULL_REQUEST_CMD="&& git fetch $GIT_URL refs/pull/$ghprbPullId/merge refs/pull/$ghprbPullId/head"
   fi
 
   # Run tests inside docker