title: GitHub Merge branch 'master'
body: <p>Been trying out Git and Github after many years of svn use. I seem to have the basics down, but one item is confusing me.</p>
  
  <ul>
  <li><p>UserA makes a change to FileA and pushes to the remote server
  (GitHub) </p></li>
  <li><p>UserB makes a change to FileB. He first pulls from remote
  server, and then pushes his change to FileB to the remote server</p></li>
  <li><p>GitHub commit history shows the push from UserA and the push from UserB</p></li>
  <li><p>However, there is an additional entry in the commit history from UserB called 'Merge branch 'master' of <a href="https://github.com/xxx/yyy" rel="noreferrer">https://github.com/xxx/yyy</a>'. Viewing the diff in Github shows this to be an exact replica of the Changes that UserA made to FileA</p></li>
  </ul>
  
  <p>Why is this duplicate shown - both the push from UserA to FileA and the Merge branch master entries are identical...the second seems superfluous to me.</p>