title: how to compile and run two git branches
body: <p>I have two separated branches in git, and one of them is generating the correct output, while the other one which is another way of doing the same procedure is not. I keep jumping between the branches, and modify and then things on one branch and compare it with the stuff on the other branch. Is there way to compile and run them in parallel without moving back and forth between them (using git checkout, etc)?</p>