Yeah, it's usually the commit message you're after, or the commit hash that you can use to look up the whole commit.
Another possibility: git context
I've used it to know the author more than once, so I can ask for help with a specific section of the code.
They never remember writing it...
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.