How to exit a 'git status' list in a terminal?
I have to guess here, but git is probably running its output into your $PAGER program, likely less or more. In either case, typing q should get you out.
Type 'q' and it will do the job.
Whenever you are at the terminal and have a similar predicament keep in mind also to try and type 'quit', 'exit' as well as the abort key combination 'Ctrl + C'.