Unable to log in to Fedora Cloud Images

I am trying to run a cloud image, started using virt-install. According to the docs, this should be simple:

https://fedoraproject.org/wiki/Test_Day:2022-04-08_Fedora_36_Cloud_Testday#Qcow2_images

However, once the image is started, I have no way to log in. The provided ways of using a password or ssh-key don’t work.

I would expect to use the user fedora with the provided ssh-key, or the user root (on the console) with the provided password. Neither works.

Ok, I was testing aarch64. I just tried x86_64, which seems to work as advertised. But aach64 seems broken.