title: How can I get rid of "Lost heads"?
body: <p>In my first attempt to do something with git I used GitHub for Windows. As it is simple and quite primitive tool I decided to try SmartGit. As I was looking around I discovered I have leftovers over my tests - something called "lost heads". How can I get rid of this garbage? It seemed that </p>
  
  <pre><code>git gc --prune=now
  </code></pre>
  
  <p>or something similar should work, but nothing changed. I tried googling, but everybody was trying to do reverse thing - restore lost commits from lost head or something similar.</p>