$ git clone -n https://src.fedoraproject.org/rpms/farstream02.git /var/lib/mock/f41-build-1278078-23156/root/chroot_tmpdir/scmroot/farstream02
Cloning into '/var/lib/mock/f41-build-1278078-23156/root/chroot_tmpdir/scmroot/farstream02'...
$ git fetch origin d68efc77555cdc1959015ff7142539a4796aba0d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/farstream02
 * [new ref]         d68efc77555cdc1959015ff7142539a4796aba0d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d68efc7 Eliminate use of obsolete %patchN syntax (#2283636)