libvirt users - Sep 2020 - Error With Xeon 2678 in virt-manager

Hello, I have to select Ivy Bridge since I have Xeon 2678 but I cannot find
it on the drop-down menu in virt-manager. When I select copy host cpu
configuration it changes it to EPYC as soon as I click the start button.

I have Manjaro on my computer.

How to solve this problem?

Thanks!
*John Washington Bajer*
*El Ciclista de la Triste Figura*