$ git clone -n https://src.fedoraproject.org/rpms/gnet2.git /var/lib/mock/f41-build-756755-13422/root/chroot_tmpdir/scmroot/gnet2
Cloning into '/var/lib/mock/f41-build-756755-13422/root/chroot_tmpdir/scmroot/gnet2'...
$ git fetch origin 9876211583dda89c44a7ae216f226983df7e35d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnet2
 * [new ref]         9876211583dda89c44a7ae216f226983df7e35d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9876211 Eliminate use of obsolete %patchN syntax (#2283636)