diff --git a/hack/prow.sh b/hack/prow.sh
index f20a9c67a6..a5fd118efc 100755
--- a/hack/prow.sh
+++ b/hack/prow.sh
@@ -41,5 +41,5 @@ docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
 loudecho "Push manifest list containing amazon linux and windows based images to GCR"
 export REGISTRY=$REGISTRY_NAME
 export TAG=$GIT_TAG
-export VERSION=$(git describe --exact-match --tags 2> /dev/null || git rev-parse --short HEAD)
+export VERSION=$PULL_BASE_REF
 IMAGE=gcr.io/k8s-staging-provider-aws/aws-ebs-csi-driver make all-push