title: getting latest changes and updates from git server
body: <p>I had created my own Branch named as vishal_branch from master branch.
  I had done some changes before and committed.
  After me many other's also did changes and committed.
  This will update the server with new changes.
  Now again I am working in my local Branch (vishal_branch).</p>
  
  <p>How can I get the lasted updates of server in my branch.</p>