[matheusmoreira]

This is great for vendoring external dependencies that aren't under the developer's control. When the same developer is working on several related but separate projects at the same time, it's too cumbersome.

Would be nice if git submodules could also point to a branch instead of specific commits. That way, the superproject's state would not be modified every time the branch is updated.

[adrianN]

If your software is small enough that a small handful for engineers can keep the whole thing in their head, you probably don't need submodules. If you have different teams working on different parts of the project, submodules start making more sense.