/usr/share/man/man1/pigz.1.gz is in pigz 2.3-2.
This file is owned by root:root, with mode 0o644.
It is a symlink to /usr/share/man/man1/./usr/share/man/man1/unpigz.1.gz
/usr/share/man/man1/./usr/share/man/man1/unpigz.1.gz