$ git clone -n https://src.fedoraproject.org/rpms/axmail.git /var/lib/mock/f41-build-762746-13458/root/chroot_tmpdir/scmroot/axmail
Cloning into '/var/lib/mock/f41-build-762746-13458/root/chroot_tmpdir/scmroot/axmail'...
$ git fetch origin b91d217cae07cfdec0b7b7026914823c55bc95db:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/axmail
 * [new ref]         b91d217cae07cfdec0b7b7026914823c55bc95db -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b91d217 Eliminate use of obsolete %patchN syntax (#2283636)