Hi,
libselinux golang bindings [1] haven't been touched since 2014, have never been upstreamed, nothing requires/uses them in Fedora and since there's another SELinux golang bindings maintained by opencontainers [2] I'm going to drop them from Fedora Rawhide.
[1] https://github.com/fedora-selinux/selinux/tree/master/libselinux/golang [2] https://github.com/opencontainers/selinux
Thanks,
Petr