Copy .patch when viewing a commit

[BChausse-GoTo]

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

Typing c allows to copy almost anything from within git serve. However, when looking at a commit,
that key does nothing.

It could be quite helpful to copy the patch contents instead. This would allow one to patch his local repo without
even cloning the upstream one.

Describe the solution you'd like

Typing c when viewing a git commit would copy to my clipboard the contents from the following:

git show --format=raw --color=never -p <currently_observed_commit_hash>

One could then just paste it into a local file and patch his local branch(es).

Describe alternatives you've considered

Manually cloning the repo (but this is tedious when a commit is right there before you)

Additional context

Typing c here could give me the .patch version of if ;)