This seems like a very good idea, not just because of the desire to do human archaeology at times, but also to let further agentic exploration occur. It would be best if it became a separate section of the commit that could just be blank or contain other documentation in the case of human authorship. The commit message shouldn't get longer and longer. It should continue to tell the concise story that humans and LLMs alike consume quickly to gain some initial synthesis.

So I like the link's approach quite a bit.