A clone is a late born twin.
They would get their souls from the same place that everyone else gets their souls, from God.
The idea that clones would be denied a soul comes from the same people who thought that twins "shared" a soul, or that only one had a soul or that one twin was "evil".
Such superstitious twaddle should be slapped down hard.
Because once the idea that "they don't have souls" takes root you are only a step away from saying that people are property rather then people. That never ends well.
Such superstitious twaddle should be slapped down hard.