Hello, toracat.
Thank you for your response. I also received a response from Mike McGrath
We don't allow downloading directly from koji (its a DOS concern). You can find the telnet version you're looking for on a mirror though, for example:
https://repo.ialab.dsu.edu/centos/8-stream/AppStream/x86_64/os/Packages/teln...
It's been there since December 2nd.
and I was able to confirm that telnet-server-0.17-75.el8.x86_64.rpm solves the problem using my environment.