In this case, they mentioned the involvement of a confidential state agency in the commit message, so it does not seem like there is a gag order per se, at leas

In this case, they mentioned the involvement of a confidential state agency in the commit message, so it does not seem like there is a gag order per se, at least not a very broad one. And to my knowledge, warrant canaries haven't been tested in U.S. courts, so the zeroth (and possibly most common) scenario would just be that you remove the canary and nothing happens to you, and the canary works as intended.