$ git clone -n https://src.fedoraproject.org/rpms/HdrHistogram_c.git /var/lib/mock/f40-build-2236812-53519/root/chroot_tmpdir/scmroot/HdrHistogram_c
Cloning into '/var/lib/mock/f40-build-2236812-53519/root/chroot_tmpdir/scmroot/HdrHistogram_c'...
$ git fetch origin 9887d07864fa22a3d984eacc3962f496e8ee04f0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/HdrHistogram_c
 * [new ref]         9887d07864fa22a3d984eacc3962f496e8ee04f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9887d07 Rework of gating tests