Question: can I use this if my repo is not a fork?

[linonetwo]

Can I merge arbitrary public repo to my repo?

Can I merge several repos to a sub directory of my mono repo?

Thanks

[Qubik65536]

Yes, you will be able to use this even if your repo is not a fork. I haven't tried to merge multiple repos to sub directory, but I think you will be able merge different repos to different branches.