commit <sha> upstream. vs git cherry-pick -x

Hello stable maintainers, While working on some backports I'm about to send hopefully today or tomorrow, I was curious why the convention seems to be for folks to use "commit <sha> upstream." in commit messages? I know that's what's in https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html#opti..., but I was curious whether the format from `git cherry-pick -xs <sha>` is not acceptable? I assume there's context as to why not? It is nice to have that info uniformly near the top, but I find myself having to cherry-pick then amend a lot. Or is there an option in git to automate the stable kernel's preferred style?