title: How to rollback everything to previous commit
body: <p>Recently in a project with multiple people, a commit was made as seen in the image below. Marked in red you can see a commit with the description/comment of 'Merge?'.</p>
  
  <p>This commit added numerous files and altered numerous others and was never intended to take place.</p>
  
  <p>Using <a href="/questions/tagged/atlassian-sourcetree" class="post-tag" title="show questions tagged &#39;atlassian-sourcetree&#39;" rel="tag">atlassian-sourcetree</a> what do I need to do to roll everything back to the commit highlighted in blue? (I am 8 commits behind as seen in the screenshot.)</p>
  
  <p><img src="https://i.stack.imgur.com/wmoTF.png" alt="sourcetree troubs"></p>