$ git clone -n https://src.fedoraproject.org/rpms/kclock.git /var/lib/mock/f42-build-side-1-3517041-46096/root/chroot_tmpdir/scmroot/kclock
Cloning into '/var/lib/mock/f42-build-side-1-3517041-46096/root/chroot_tmpdir/scmroot/kclock'...
$ git fetch origin 9083730e8c3fc7ef986c0e81ee69896f6f4858aa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kclock
 * [new ref]         9083730e8c3fc7ef986c0e81ee69896f6f4858aa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9083730 Remove unneeded patch