title: git command to move a folder inside another
body: <p>I have created a folder <code>common</code> with a bunch of source files and folders.</p>
  <p>Now I want to move the <code>common</code> folder into the <code>include</code> folder so it looks like <code>include/common</code></p>
  <p>I tried these:</p>
  <ol>
  <li><p><code>git add include</code></p>
  </li>
  <li><p><code>git mv common/ include/</code></p>
  <p>but it fails with this error</p>
  <blockquote>
  <p>fatal: bad source, source=myrepo/common, destination=myrepo/include</p>
  </blockquote>
  </li>
  <li><p>I tried <code>git mv common/ include/common</code> but I get the same error</p>
  </li>
  </ol>
  <p>Any idea how to achieve this?</p>