/usr/share/doc/apt-utils/changelog.gz is in apt-utils 1.0.1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/apt-utils/../libapt-pkg4.12/changelog.gz
/usr/share/doc/apt-utils/../libapt-pkg4.12/changelog.gz