[Feature/git_commit] Only show git commit hash in detached HEAD state

[ybc37]

Feature Request

I recently switched to starship and really like it. Thanks!
The new git_commit module is very useful, but I have a feature request, which maybe also others may find useful (as other prompts do it like that).

Is your feature request related to a problem? Please describe.

In version 0.28.0 the git_commit module was added. I find the commit hash very useful when in detached HEAD state (no branch checked out, but a specific commit, e.g. while interactively rebasing,...). When I'm on a branch I don't need this information.

Describe the solution you'd like

IMHO an option to toggle the behavior would be great. E.g. detached_only:

• false (default): behaves like right now; always shows the current commit hash.
• true: only shows the commit hash when in detached HEAD state; not when on a branch.

Describe alternatives you've considered

Just live with it :)