title: Can I override working copy by index content?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/52704/how-do-you-discard-unstaged-changes-in-git">How do you discard unstaged changes in git?</a>  </p>
  </blockquote>
  
  
  
  <p>I know that when I <code>git add</code> tracking content to repository, git copy/update content of its object stores. If I change my content continuously without <code>git add</code> again, and <strong>I regrets all those changes and I want my last snapshot in index back to my working copy</strong>, how can I do?</p>