title: Branch is in master without merging in master before that
body: <p>we use git on terminal and gitlab. We have three server environments Dev, Stage(stage branch) and Production(master).</p>
  
  <p>The problem is that we have one branch which is created from master and this branch is merged into our stage branch which is used in the Stage server. We have never merged this branch into master. But the changes from its commit are there when I open on git blame - its changes are there. Its commit is in master. I checked the whole history in gitlab, graphs etc. etc. and this branch is nowhere merged into master. Its not merged in another branch which might be merged in master. I cannot find anything in the way of this branch to master.</p>
  
  <p>How can I understand where this is branch is merged from?</p>