title: How to delete HEAD branch on remote Git repository?
body: <p>This is remote Git repository on server</p>
  
  <pre><code>[aaa@web48 proj.git]$ git ls-remote .
  dfca707432eb53678b37026b160a4bdc7f1ac6c3    HEAD
  dfca707432eb53678b37026b160a4bdc7f1ac6c3    refs/heads/master
  1e09c37443ee758644a712e3c1a8b08b18a1f50d    refs/heads/placeholder
  </code></pre>
  
  <p>I want to delete HEAD/master branch. How can I do it either on server or remotely? I'm using Tower client.</p>