$ git clone -n https://src.fedoraproject.org/rpms/dragon.git /var/lib/mock/f42-build-3436149-45433/root/chroot_tmpdir/scmroot/dragon
Cloning into '/var/lib/mock/f42-build-3436149-45433/root/chroot_tmpdir/scmroot/dragon'...
$ git fetch origin 2241619cc3892d69a194f7864cf4de1b5ba0df01:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dragon
 * [new ref]         2241619cc3892d69a194f7864cf4de1b5ba0df01 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2241619 25.03.80