Submodule propagation question with wptserve

11 days ago, this commit landed:

https://github.com/w3c/wptserve/pull/40

https://github.com/w3c/wptserve/commit/08a2d5ce6c3af279ee16c8b98b442ee65699b44c


Today, I have folks following instructions from
http://testthewebforward.org/docs/github-101.html and they're not
seeing this commit.

Any ideas what's going on, how to fix this?

thanks,

Brad