You should try to open `$(git rev-parse --show-cdup)/.git/COMMIT_EDITMSG` (or [some variant](http://stackoverflow.com/questions/957928/is-there-a-way-to-get-the-git-root-directory-in-one-command))
You should try to open
$(git rev-parse --show-cdup)/.git/COMMIT_EDITMSG(or some variant)