I do this infrequently enough that I want to record a reminder how I do it:
sudo cp ~/Downloads/rhel-server-7.6-x86_64-kvm.qcow2 /var/lib/libvirt/images/tower.qcow2 sudo virt-install --vcpus=2 --name tower --ram 4096 --import --disk /var/lib/libvirt/images/tower.qcow2 |