$ git clone -n https://src.fedoraproject.org/rpms/cpuid.git /var/lib/mock/f39-build-2515682-61728/root/chroot_tmpdir/scmroot/cpuid
Cloning into '/var/lib/mock/f39-build-2515682-61728/root/chroot_tmpdir/scmroot/cpuid'...
$ git fetch origin f3f6055baa0aec9822edff72c0333ee9c9b0b141:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cpuid
 * [new ref]         f3f6055baa0aec9822edff72c0333ee9c9b0b141 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f3f6055 Add missing run-time requirement (fixes rhbz#2238868)