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: Simon McVittie <firstname.lastname@example.org>
Date: Mon Jul 20 10:55:29 2020 +0100
d/watch: Watch for any archive extension
Upstream releases switched from tar.gz to tar.xz for the 1.13.x branch.