/usr/share/doc/libg3d-dev/changelog.Debian.gz is in libg3d-dev 0.0.8-22.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libg3d-dev/../libg3d0/changelog.Debian.gz
/usr/share/doc/libg3d-dev/../libg3d0/changelog.Debian.gz