[Arm-dev] where is source of AAVMF package?

CentOS 7 has AAVMF package in altarch/7/os/aarch64 repository. But does someone saw it's source package?

I checked vault.centos.org but not found it. Package is also not present in x86-64 repository (where it would be named OVMF).

The only place where src.rpm for it exists is one CBS build:

http://cbs.centos.org/koji/buildinfo?buildID=7000

Is it normal that CentOS repository contains packages for which source packages are hidden somewhere or did I not digged deep enough to find them?