Solution: For anyone getting a similar issue, this is a solution:

checkout scm: scm, poll: false, changelog: false

Problem: Same as JENKINS-40352(which is for GIT)

Using 

checkout scm

checkout scm is done at:

pipeline Jenkinsfile script checkout

pipeline checkout after loading the Jenkinsfile (to get full depot)

checkout scm after cleanWs() (if requested as a parameter in the build)