$ git clone -n https://src.fedoraproject.org/rpms/xfce4-vala.git /var/lib/mock/f41-build-side-1-2671331-29139/root/chroot_tmpdir/scmroot/xfce4-vala
Cloning into '/var/lib/mock/f41-build-side-1-2671331-29139/root/chroot_tmpdir/scmroot/xfce4-vala'...
$ git fetch origin 55ac3b17cf8ad88471a8c129751134e85972b343:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xfce4-vala
 * [new ref]         55ac3b17cf8ad88471a8c129751134e85972b343 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 55ac3b1 convert license to SPDX