When viewing a build, the Git plugin creates a changelog to display under the "changes" heading, roughly comprising a numeric list of git commit messages between the last repo pull and the current pull.

It is possible to override this with the "Calculate changelog against a specific branch" additional behaviour.

However, this is too complex for the scenario I need (I've got a per-commit builder, which splits commits which were bundled together by polling/github pushes into individual commitids) - I just want this to show the single commit log message for the current commit.