title: how to undo "svn up -r<old version>"
body: <p>I wanted to go back and check how things looked at a previous commit, so I used</p>
  
  <p><code>svn up -r&lt;number&gt;</code></p>
  
  <p>As so many posts on this site suggest. But NOW I want to go BACK to what in git-speak is the HEAD, my most recent commit.</p>
  
  <p>I checked svn log to get the revision number, but the log only goes up to the old commit I updated to.</p>
  
  <p>How can I go back to my most recent revision? I'm a little scared to just</p>
  
  <p><code>svn revert</code></p>
  
  <p>Knowing that that has a tendency to destroy stuff if you're not careful.</p>