$ git clone -n https://src.fedoraproject.org/rpms/golang-github-klauspost-cpuid.git /var/lib/mock/f40-build-2236425-53509/root/chroot_tmpdir/scmroot/golang-github-klauspost-cpuid
Cloning into '/var/lib/mock/f40-build-2236425-53509/root/chroot_tmpdir/scmroot/golang-github-klauspost-cpuid'...
$ git fetch origin 3d17f155063bfd085a304fdc95782fdf04342dea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-klauspost-cpuid
 * [new ref]         3d17f155063bfd085a304fdc95782fdf04342dea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d17f15 Update to 2.2.6 - Closes rhbz#2248593