$ git clone -n https://src.fedoraproject.org/rpms/cpu-x.git /var/lib/mock/f38-build-side-42-init-devel-1283407-30672/root/chroot_tmpdir/scmroot/cpu-x
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1283407-30672/root/chroot_tmpdir/scmroot/cpu-x'...
$ git fetch origin 9c5f79d6908fa2b23007a9bf8370b7470b0579e1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cpu-x
 * [new ref]         9c5f79d6908fa2b23007a9bf8370b7470b0579e1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c5f79d Revert "build: BR: libproc2 instead of libprocps | #2170458"