$ git clone -n https://src.fedoraproject.org/rpms/kdeplasma-addons.git /var/lib/mock/f40-build-788827-135430/root/chroot_tmpdir/scmroot/kdeplasma-addons
Cloning into '/var/lib/mock/f40-build-788827-135430/root/chroot_tmpdir/scmroot/kdeplasma-addons'...
$ git fetch origin 957ad087603923fb8cc93412da63ffacce9a900b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdeplasma-addons
 * [new ref]         957ad087603923fb8cc93412da63ffacce9a900b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 957ad08 6.0.0