/usr/share/doc/libsieve2-dev/changelog.Debian.gz is in libsieve2-dev 2.2.6-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libsieve2-dev/../libsieve2-1/changelog.Debian.gz
/usr/share/doc/libsieve2-dev/../libsieve2-1/changelog.Debian.gz