title: What happens in the child branch if I delete a parent branch in git
body: <p>I am planning to rename a branch in my git repository. I found out that the easy way to do that is to make a new branch from that branch and give it the desired name. </p>
  
  <p>After that I want to delete the old branch (the parent). But I'm afraid that I will lose data in my new branch if I do that. </p>
  
  <p>What happens with the commits originally made to the parent branch if I delete that branch?</p>