title: Forked repository mirroring failing
body: <p>I fail to update my forked repository <a href="https://gitlab.com/sourav_roy_gngl392/api" rel="nofollow noreferrer">https://gitlab.com/sourav_roy_gngl392/api</a> from its parent repo  <a href="https://gitlab.com/mirach/kounsel/backend/api" rel="nofollow noreferrer">https://gitlab.com/mirach/kounsel/backend/api</a>.</p>
  
  <p>It runs into the following issue , 
  "2:Fetching remote upstream failed: fatal: could not read Username for '<a href="https://gitlab.com" rel="nofollow noreferrer">https://gitlab.com</a>': No such device or address"</p>
  
  <p>Please note I've followed these guides already but in vain,</p>
  
  <p>1) <a href="https://about.gitlab.com/2016/12/01/how-to-keep-your-fork-up-to-date-with-its-origin/" rel="nofollow noreferrer">https://about.gitlab.com/2016/12/01/how-to-keep-your-fork-up-to-date-with-its-origin/</a></p>
  
  <p>2 ) <a href="https://docs.gitlab.com/ee/workflow/repository_mirroring.html" rel="nofollow noreferrer">https://docs.gitlab.com/ee/workflow/repository_mirroring.html</a>.</p>
  
  <p>I've found a clue of the above error though which is, I'm perhaps specifying a wrong mirror user, in the above tutorial 1, the step 3 says: Setup the mirror user: it's the user whose new commits to the upstream project will be attributed to in your fork.</p>
  
  <p>@minhaz, please can you provide me a correct mirror user.</p>