title: how to switching working copy in jenkins?
body: <p>i am using jenkins for build process.
  i have created one job with svn url <strong>test.svn.com/branch/branch4</strong>
  now i want to <strong>switch</strong> this working copy to <strong>test.svn.com/branch/branch5</strong>.
  how it is possible in jenkins.</p>
  
  <p>when i gave new URL in jenkins, jenkins clean old code and then took checkout.
  i dont want to clean old code, i just want to update this copy for changed file.</p>
  
  <p>because cleaning working copy and checkout new branch takes more time and occupy network bandwidth also.</p>
  
  <p>i have also installed updated subversion plugin for this issue but it doesn't fulfill my requirement. </p>
  
  <p>please let me know, if any body has any idea regarding this.</p>
  
  <p>i have also gone through below URL.</p>
  
  <p><a href="https://issues.jenkins-ci.org/browse/JENKINS-2556?page=com.atlassian.jira.plugin.system.issuetabpanels:changehistory-tabpanel" rel="nofollow">https://issues.jenkins-ci.org/browse/JENKINS-2556?page=com.atlassian.jira.plugin.system.issuetabpanels:changehistory-tabpanel</a></p>