/usr/share/doc/libggz-dev/changelog.Debian.gz is in libggz-dev 0.0.14.1-1.1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libggz-dev/../libggz2/changelog.Debian.gz
/usr/share/doc/libggz-dev/../libggz2/changelog.Debian.gz