It wont load in automode if git-commit package is installed

When `git-commit` package (magit dependency) is used and `global-git-mode` is non-nil it doesn't use this mode unless you customize `git-commit-major-mode`, which by default is `text-mode`. This had me a while scratching my head. From git-commit package description > When 'global-git-commit-mode' is enabled, which it is by default, > then opening such a file causes the features described below, to > be enabled in that buffer. Normally this would be done using a > major-mode but to allow the use of any major-mode, as the user sees > fit, it is done here by running a setup function, which among other > things turns on the preferred major-mode, by default 'text-mode'.