Main issue: #13316

The repository derived from a Bazel module should only be able to access other repositories generated from its direct dependencies.

Eg.

A/MODULE.bazel:

module(name = "A", version = "0.1.0")
bazel_dep(name = "B", version = "1.0.0")

B/MODULE.bazel:

module(name = "B", version = "1.0.0")
bazel_dep(name = "C", version = "1.1.0")

C/MODULE.bazel

module(name = "C", version = "1.1.0")

Repository A won't be able to access any targets from C unless it also declares a direct dependency on C by adding bazel_dep(name = "C", version = "1.1.0") in its MODULE.bazel file.