$ git clone -n https://src.fedoraproject.org/rpms/ddnet.git /var/lib/mock/f41-build-side-1-2892991-34607/root/chroot_tmpdir/scmroot/ddnet
Cloning into '/var/lib/mock/f41-build-side-1-2892991-34607/root/chroot_tmpdir/scmroot/ddnet'...
$ git fetch origin ec7dfdebf9c709f0e8ea6752ad34970a00fba9f0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ddnet
 * [new ref]         ec7dfdebf9c709f0e8ea6752ad34970a00fba9f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec7dfde Update to 18.6 upstream release