title: Unable to extract revision information from commit
body: <p>Just noticed a scary problem with git svn (git version 1.6.5.2).<br/>
  First commiting my work as normal with <code>git commit</code>, when finished I did <code>git svn dcommit</code>.<br/>
  This started fine with <code>Resetting to the latest refs/remotes/git-svn</code> but then failed and returned the error <code>Unable to extract revision information  from commit</code>.</p>
  
  <p>This left all files that changed in between the last svn dcommit and the current git version unstaged and all git log messages in between are also gone.<br></p>
  
  <p><strong>Now, is there a way to get the git commits with log messages back?</strong></p>