$ git clone -n https://src.fedoraproject.org/rpms/cpu-x.git /var/lib/mock/f33-build-225363-48457/root/chroot_tmpdir/scmroot/cpu-x
Cloning into '/var/lib/mock/f33-build-225363-48457/root/chroot_tmpdir/scmroot/cpu-x'...
$ git reset --hard b1d1087704b4086346e8748205a726af79dc7b83
HEAD is now at b1d1087 Update to 4.0.0-rc1