title: git push in the open PR when local branch of it deleted
body: <p>I've created a pull request in the upstream with a branch named eg. <code>testbranch</code></p>
  
  <p>Now, Unfortunately, my whole <code>git</code> folder from local gets deleted.</p>
  
  <p>I've created a new <code>git</code> on my local where I can see only <code>master</code> when I do <code>git branch</code></p>
  
  <p>I see that I need to push some commits to the open PR. But as the local branch is deleted, How can I do this? Is there any way that origin branch gets recreated on my local terminal and I can push the commits to the PR ?</p>
  
  <p>Thanks.</p>