title: Subversion: base checksum mismatch
body: <p>I am trying to commit a change in subversion to a file. This file belongs to a directory that is linked to my project via an external, and is pegged at a certain revision.</p>
  
  <p>When I do a commit, I get the error: </p>
  
  <pre><code>Commit failed
  Base checksum mismatch on....
  </code></pre>
  
  <p>I tried to check out the directory again to ensure that it was clean and perform the commit again, but I still receive the same error.</p>
  
  <p>Could it be related to committing to a pegged file? I thought that committing onto a file that is pegged should be possible and essentially branches off this code?</p>