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: Daniel Swarbrick <email@example.com>
Date: Mon Jan 13 23:08:03 2020 +0100
d/watch: Update to version 4 and drop uversionmangle