Sounds like it might be related to this issue:
https://forums.swift.org/t/an-unknown-error-occured-reference-refs-remotes-origin-master-not-found-1/68595/4
I don't know much about it but apparently, a 4X4 matrix is pretty standard for anything having to do with 3D models.
https://math.stackexchange.com/questions/336/why-are-3d-transformation-matrices-4-times-4-instead-of-3-times-3
Sounds like it might be related to this issue:
https://forums.swift.org/t/an-unknown-error-occured-reference-refs-remotes-origin-master-not-found-1/68595/4
I don't know much about it but apparently, a 4X4 matrix is pretty standard for anything having to do with 3D models.
https://math.stackexchange.com/questions/336/why-are-3d-transformation-matrices-4-times-4-instead-of-3-times-3