/usr/share/doc/libclutter-gtk-1.0-dbg/changelog.Debian.gz is in libclutter-gtk-1.0-dbg 1.4.4-3ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libclutter-gtk-1.0-dbg/../libclutter-gtk-1.0-0/changelog.Debian.gz