$ git clone -n https://src.fedoraproject.org/rpms/libtevent.git /var/lib/mock/f42-build-side-1-3587367-46931/root/chroot_tmpdir/scmroot/libtevent
Cloning into '/var/lib/mock/f42-build-side-1-3587367-46931/root/chroot_tmpdir/scmroot/libtevent'...
$ git fetch origin ea4185022f0cc43b784d7e73081d88c783a5322b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libtevent
 * [new ref]         ea4185022f0cc43b784d7e73081d88c783a5322b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea41850 Add LICENSE file