this package seems to have new commits in its VCS but has
not yet updated debian/changelog. You should consider updating
the Debian changelog and uploading this new version into the archive.
Here are the relevant commit logs:
Author: Boyuan Yang <firstname.lastname@example.org>
Date: Tue Sep 3 13:46:58 2019 -0400
Prepare new upload (12.5-2, unstable)