$ git clone -n https://src.fedoraproject.org/rpms/imagefactory-plugins.git /var/lib/mock/f41-build-785938-13590/root/chroot_tmpdir/scmroot/imagefactory-plugins
Cloning into '/var/lib/mock/f41-build-785938-13590/root/chroot_tmpdir/scmroot/imagefactory-plugins'...
$ git fetch origin f0083c371b973ac418c3278c390cc88a576e0599:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/imagefactory-plugins
 * [new ref]         f0083c371b973ac418c3278c390cc88a576e0599 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f0083c3 Eliminate use of obsolete %patchN syntax (#2283636)