title: What is the difference between origin and upstream on GitHub?
body: <p>What is the difference between <code>origin</code> and <code>upstream</code> on <a href="http://en.wikipedia.org/wiki/GitHub" rel="noreferrer">GitHub</a>?</p>
  <p>When a <code>git branch -a</code> command is executed, some branches it displays have a prefix of <code>origin</code> (<code>remotes/origin/..</code>) while others have a prefix of <code>upstream</code> (<code>remotes/upstream/..</code>).</p>