$ git clone -n https://src.fedoraproject.org/rpms/nheko.git /var/lib/mock/f41-build-1022568-18080/root/chroot_tmpdir/scmroot/nheko
Cloning into '/var/lib/mock/f41-build-1022568-18080/root/chroot_tmpdir/scmroot/nheko'...
$ git fetch origin d6771d225614202811d01600aabd33fd64ba3aa0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nheko
 * [new ref]         d6771d225614202811d01600aabd33fd64ba3aa0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d6771d2 Updated to version 0.12.0.