/usr/share/man/man3/sidget.3.gz is in libselinux1-dev 2.2.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man3/avc_context_to_sid.3.gz
/usr/share/man/man3/avc_context_to_sid.3.gz