title: how to know which git branch triggered the jenkins job
body: <p>I have a pipeline Jenkins job which is working as expected, configured with the option <strong>"GitHub hook trigger for GITScm polling"</strong> for auto build on any push to git repo. </p>
  
  <p>I have hooked this Jenkins URL for multiple git repo's say <code>repo-A</code>, <code>repo-B</code>, <code>repo-B</code>.<br>
  Jenkins job is triggering automatically on any code pushes to these repo's.</p>
  
  <p>But I would like to know which repo has triggered the Jenkins job as it is configured to multiple git repo's at Jenkins level. Any help on this highly appreciated.</p>