virbr0 device, which just worked, since that is a bridge device. If that is insufficient for you, then I see there are some maybe relevant google results, e.g. https://www.cyberciti.biz/faq/how-to-add-network-bridge-with-nmcli-networkmanager-on-linuxvirbr0 is a default device that comes with libvirt
virbr0 nmcli command might work. For creating a new bridge or updating the virbr0 one, idkdnf install change to rpm-ostree installcopr enable <repo>
copr enable <repo>?
virbr0virbr0virbr0virbr0nmclidnf installrpm-ostree installcopr enable <repo>copr enable <repo>