in src/serialization.rs [312:317]
fn deserialize_elem<G: Group, I: Iterator<Item = u8>>(input: &mut I) -> Result<G::Elem> {
let input = input.by_ref().take(G::ElemLen::USIZE);
GenericArray::<_, G::ElemLen>::from_exact_iter(input)
.ok_or(Error::Deserialization)
.and_then(|bytes| G::deserialize_elem(&bytes))
}