title: git-svn rename tracking branch
body: <p>My current svn cloned branches (using the -s 'standard layout') option are called:</p>
  
  <pre><code>$ git branch -r
  branch1
  branch2
  </code></pre>
  
  <p>I would like to rename those, such that they are:</p>
  
  <pre><code>$ git branch -r
  svn/branch1
  svn/branch2  
  </code></pre>
  
  <p>As though I had called $ git-svn clone --prefix svn   originally.  I don't need to change any names on the remote side.</p>