$ git clone -n https://src.fedoraproject.org/rpms/kf6-ksvg.git /var/lib/mock/f42-build-side-1-3573604-46768/root/chroot_tmpdir/scmroot/kf6-ksvg
Cloning into '/var/lib/mock/f42-build-side-1-3573604-46768/root/chroot_tmpdir/scmroot/kf6-ksvg'...
$ git fetch origin 7ea6c12789a5318b51893a980ef4388568c8fa10:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-ksvg
 * [new ref]         7ea6c12789a5318b51893a980ef4388568c8fa10 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7ea6c12 6.15 and plasma 3.4 compatibility rebuild