/usr/share/doc/libvirt-glib-1.0-0-dbg/changelog.Debian.gz is in libvirt-glib-1.0-0-dbg 0.1.6-1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libvirt-glib-1.0-0-dbg/../libvirt-glib-1.0-0/changelog.Debian.gz