diff --git a/commitlint.groovy b/commitlint.groovy
index 3141725fa..5630f4e8a 100644
--- a/commitlint.groovy
+++ b/commitlint.groovy
@@ -31,7 +31,7 @@ node('cico-workspace') {
 	try {
 		stage('prepare bare-metal machine') {
 			if (params.ghprbPullId != null) {
-				ref = "pull/${ghprbPullId}/head"
+				ref = "pull/${ghprbPullId}/merge"
 			}
 			sh 'scp -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no ./prepare.sh root@${CICO_NODE}:'
 			sh "ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no root@${CICO_NODE} ./prepare.sh --workdir=/opt/build/go/src/github.com/ceph/ceph-csi --gitrepo=${ci_git_repo} --ref=${ref} --history"
@@ -41,7 +41,7 @@ node('cico-workspace') {
 			if (params.ghprbTargetBranch != null) {
 				git_since = "origin/${ghprbTargetBranch}"
 			}
-			sh "ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no root@${CICO_NODE} 'cd /opt/build/go/src/github.com/ceph/ceph-csi && make containerized-test CONTAINER_CMD=podman TARGET=commitlint GIT_SINCE=${git_since} REBASE=1'"
+			sh "ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no root@${CICO_NODE} 'cd /opt/build/go/src/github.com/ceph/ceph-csi && make containerized-test CONTAINER_CMD=podman TARGET=commitlint GIT_SINCE=${git_since}'"
 		}
 	}
 
diff --git a/mini-e2e-helm.groovy b/mini-e2e-helm.groovy
index cc8c79a00..44d035cb4 100644
--- a/mini-e2e-helm.groovy
+++ b/mini-e2e-helm.groovy
@@ -52,7 +52,7 @@ node('cico-workspace') {
 
 	stage('checkout PR') {
 		if (params.ghprbPullId != null) {
-			ref = "pull/${ghprbPullId}/head"
+			ref = "pull/${ghprbPullId}/merge"
 		}
 		if (params.ghprbTargetBranch != null) {
 			git_since = "${ghprbTargetBranch}"
diff --git a/mini-e2e.groovy b/mini-e2e.groovy
index b2ccd3f65..4a6942e9f 100644
--- a/mini-e2e.groovy
+++ b/mini-e2e.groovy
@@ -49,7 +49,7 @@ node('cico-workspace') {
 
 	stage('checkout PR') {
 		if (params.ghprbPullId != null) {
-			ref = "pull/${ghprbPullId}/head"
+			ref = "pull/${ghprbPullId}/merge"
 		}
 		if (params.ghprbTargetBranch != null) {
 			git_since = "${ghprbTargetBranch}"
diff --git a/upgrade-tests.groovy b/upgrade-tests.groovy
index c3b81a2c5..b28122e49 100644
--- a/upgrade-tests.groovy
+++ b/upgrade-tests.groovy
@@ -49,7 +49,7 @@ node('cico-workspace') {
 
 	stage('checkout PR') {
 		if (params.ghprbPullId != null) {
-			ref = "pull/${ghprbPullId}/head"
+			ref = "pull/${ghprbPullId}/merge"
 		}
 		if (params.ghprbTargetBranch != null) {
 			git_since = "${ghprbTargetBranch}"