I added EPEL8 builds of OpenConnect in my COPR at https://copr.fedorainfracloud.org/coprs/dwmw2/openconnect/ They fail because there's no ocserv for EPEL8.
It is there, but needs karma to get in: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2019-bfdf3e90fe