/usr/share/doc/gir1.2-gtk-2.0/changelog.Debian.gz is in gir1.2-gtk-2.0 2.24.32-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/gir1.2-gtk-2.0/../libgtk2.0-0/changelog.Debian.gz
/usr/share/doc/gir1.2-gtk-2.0/../libgtk2.0-0/changelog.Debian.gz