Github QA bot adds comments and sends emails on watched PR's which do not relate to the packages references. Eg. https://github.com/gentoo/gentoo/pull/1402#issuecomment-217611515 https://github.com/gentoo/gentoo/pull/1402#issuecomment-217613809 https://github.com/gentoo/gentoo/pull/1402#issuecomment-217620749 https://github.com/gentoo/gentoo/pull/1402#issuecomment-217622225 https://github.com/gentoo/gentoo/pull/1402#issuecomment-217625285 Ref. https://github.com/gentoo/gentoo/pull/1402#issuecomment-217622739
(In reply to Michael Everitt (IRC: veremit) from comment #0) > Github QA bot adds comments and sends emails on watched PR's which do not > relate to the packages references. > referenced* [by the PR].
This was changed a while ago.