title: svnsync - couldn't get lock on destination repos
body: <p>Using svnsync </p>
  
  <pre><code>$ svnsync --non-interactive sync ${REPO}
  </code></pre>
  
  <p>after an abort of the process there was this error message with retry  </p>
  
  <pre><code>Failed to get lock on destination repos, currently held by 'svn.test.com:0e4e0d98-631d-0410-9a00-9330a90920b3'  
  ...  
  Failed to get lock on destination repos, currently held by 'svn.test.com:0e4e0d98-631d-0410-9a00-9330a90920b3'   
  svnsync: Couldn't get lock on destination repos after 10 attempts  
  </code></pre>
  
  <p>Is there a way to fix this problem?</p>