title: How to fix "containing working copy admin area is missing" in SVN?
body: <p>I deleted manually a directory I just added, offline, in my repository. I can't restore the directory.</p>
  
  <p>Any attempt to do an update or a commit will fail with: </p>
  
  <pre><code>"blabla/.svn" containing working copy admin area is missing.
  </code></pre>
  
  <p>I understand why, but is there anyway to fix this.</p>
  
  <p>I don't want to checkout the entire repo and add my changes to it manually, it would take hours.</p>