uscan had problems while searching for a new upstream version:
The following paragraph isn't well formatted, skipping it: << ==EOF==
# The following rule is right, but the upstream frequently...
# https://github.com/exeldro/obs-gradient-source/tags archive/refs/tags/(\d\S+)\.tar\.(?:bz2|gz|xz)
#
# The upstream frequently forgets to update the tag on GitHub, but he always
# updates the official homepage at obsproject.com (see Homepage field at
# debian/control file). The following rule is a workaround to check the current
# version on the official homepage and to call this version from the GitHub.
# LINTIAN will warn about the filenamemangle. The filenamemangle is needed
# because we are using jumps and workarounds to get the last version from the
# upstream. Consequently, the name got by uscan is an HTML code (this is trash,
# no filename, no version).
==EOF==