/usr/share/man/pl/man2/getpgrp.2.gz is in manpages-pl-dev 1:0.6-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/pl/man2/setpgid.2.gz
/usr/share/man/pl/man2/setpgid.2.gz