@gittaca That is one possibility but I've seen my own commits turn from well-thought out prose to "Checkpoint" depending on the stress of the moment and the cognitive load to overcome it.
And as someone who has had to review a commit log to see what to put into the change log I've also seen instances where a singular thought is spread out over multiple commits.
So while it might be good for disciplined developers / teams I'd submit that you still need a changelog to surface that prose.