/usr/share/doc/radosgw/changelog.Debian.gz is in radosgw 10.1.2-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/radosgw/../librados2/changelog.Debian.gz
/usr/share/doc/radosgw/../librados2/changelog.Debian.gz