/usr/share/doc/libqtscript4-xmlpatterns/changelog.Debian.gz is in libqtscript4-xmlpatterns 0.2.0-1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libqtscript4-xmlpatterns/../libqtscript4-core/changelog.Debian.gz