Comment by Merad

I make a branch named 'feature/ABC-123', do some work, and push to the server. You want to take over my branch so you do a fetch then run the command 'git checkout feature/abc-123'. You will check out my branch, but when you go to push back to the server you're going to be push a new branch with a lower case file name unless you realize what has happened and know that you need to run 'git push origin feature/abc-123:feature/ABC-123' to push your changes to the existing remote branch.