ext/rustup @e93bd4da-c1e0-4ba0-a55c-88fa2cf5eb7d/main

The path at ext/rustup contains a submodule, revision c31b781f1a50f4aa20c2d1b8f9aa661f1fcd4c40. It can be checked out from https://salsa.debian.org/rust-team/rustup.git.