/usr/share/doc/libguestfs-gobject-dev/changelog.Debian.gz is in libguestfs-gobject-dev 1:1.36.13-1ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libguestfs-gobject-dev/../libguestfs0/changelog.Debian.gz