title: How to revert changes in GitLab branch
body: <p>I just started learning java through a course and faced some problem. I had my first homework and I needed to push it on GitLab, where we have 2 branches - master (place to commit and push) and prod branch (where all materials for our education are placed).</p>
  
  <p>I made a mistake and committed to prod branch and now mirroring is broken, so I can't get any new information from education project (lections, homeworks, etc).</p>
  
  <p>I asked a teacher to help, but he says that I should revert my prod branch to started position. I told him multiple times that I don't know how to do that and asked him to connect view teamviewer (it will take 5 minutes of his time), but he is strictly pronetic, that I should do it alone, but I'm doing it 4 hours and there are no changes.</p>