Please branch and build python-pyghmi in epel9. If you do not wish to maintain python-pyghmi in epel9, or do not think you will be able to do this in a timely manner, I would be happy to be a co-maintainer of the package (FAS: jonathanspw); please add me through https://src.fedoraproject.org/rpms/python-pyghmi/adduser
1.5.34-2.el9 is available from RHEL appstream.