Their external FOSS dependencies are imported into the monorepo and are built from there. So they get to use the same pattern there. Someone who updates the cop

Their external FOSS dependencies are imported into the monorepo and are built from there. So they get to use the same pattern there. Someone who updates the copy of the dependency in the monorepo will see the test failures of their reverse dependencies at that time, before the change is merged to master. (Yeah they use different version control terminology since their monorepo doesn't use git, but I've translated.)