title: In gerrit, how to clone project from HEAD:refs/for/master
body: <p>I try to use gerrit to do some test.
  Use "git push origin HEAD:refs/for/master", 
  before gerrit code review, I want to do some test by Jenkins.
  How to use command to clone the commit from "refs/for/master"?
  or fetch to Jenkins job workspace in order to test?</p>
  
  <p>There is only one branch.</p>
  
  <p>"git branch" -> *master</p>