title: git-svn clone error: error: there are still refs under 'refs/remotes/tags'
body: <p>I am trying to clone a Subversion repository to git, but it keeps giving me an error that I don't really understand:</p>
  
  <pre><code>error: there are still refs under 'refs/remotes/tags'
  fatal: Cannot lock the ref 'refs/remotes/tags'.
  update-ref -m r1649 refs/remotes/tags 16630eb01aa7abb331cdaa7ca07c1736656a058e: command returned error: 128
  </code></pre>
  
  <p>The subversion project has a lot of tags and about 15 branches.  It seems to fail at a different point each time.  I have cloned a number of other projects just fine, just seems to get stuck at this one.</p>
  
  <p>Any ideas what this error means and how I might fix the issue?</p>
  
  <p>Update:</p>
  
  <p>I have found what is probably the cause of the problem, now I just need a solution.  First of all it is not a different point each time it fails, it is failing at a particular revision each time.  And I have checked the subversion logs at that revision and I have found that I mistakenly create a tag in branches/tags rather than in tags.  This was fixed immediately, but it seems to be causing problems in git-svn.</p>
  
  <p>Any ideas what I can do to get around this?</p>