Describe what you would like us to do:

I am trying to debug a Rawhide aarch64-specific build failure. I tried to reproduce it in mock on aarch64-test01.fedorainfracloud.org and aarch64-test02.fedorainfracloud.org, but mock on those machines doesn't know that Rawhide != F40, leading to failure to install packages. On those machines:

[jjames@aarch64-test01 ~][PROD]$ rpm -q mock
mock-5.2-1.fc38.noarch
[jjames@aarch64-test01 ~][PROD]$ rpm -q mock-core-configs
mock-core-configs-39.2-1.fc38.noarch

[jjames@aarch64-test02 ~][PROD]$ rpm -q mock
mock-5.2-1.fc37.noarch
[jjames@aarch64-test02 ~][PROD]$ rpm -q mock-core-configs
mock-core-configs-39.1-1.fc37.noarch

When do you need this to be done by? (YYYY/MM/DD)

No particular time. I can work around the issue with a custom mock config, but it would be great if mock worked out of the box.