title: How to replace wrong code (committed by mistake) into the repository
body: <p>I am newbie with svn and I stuck after a mistake.</p>
  
  <p>I have two systems:</p>
  
  <p>a) system 1 - working copy with the right code</p>
  
  <p>b) system 2 - working copy with wrong code, committed to the repository by mistake</p>
  
  <p>I would like re-commit the right code from system 1 but I can't. If I change a file and I try to commit it I get the message:</p>
  
  <p>file xyx is out of date</p>
  
  <p>Obviously I can't update the system 1 working copy otherwise I loose the right code.</p>
  
  <p>How can I exit from this deadlock ?</p>
  
  <p>Thank you</p>
  
  <p>Fab.</p>