title: Undoing git update-index --assume-unchanged
body: <p>I have used the following command to add a file to the repository with some default settings, then change the settings locally without pushing them to the repo every single time:</p>
  
  <pre><code>git update-index --assume-unchanged &lt;filepath&gt;
  </code></pre>
  
  <p>Now I need to push my local changes to the repo so I would need to undo this command. How would I be able to do this?</p>
  
  <p><strong>Note</strong>: I am aware that deleting the repo and then cloning it again would undo this and I have a wild guess that <code>git reset --hard</code> would also work but I have multiple files that are in the same situation and executing the above command to have git ignore them again is just not feasible. Therefore I'm looking for a command that would only affect that specific file.</p>