[Python-Dev] any way to subscribe to bugs and PRs on a particular topic?

[Chris Withers]

Hello,

I'd like to see if I can help with unittest.mock, but don't have a huge 
amount of bandwidth and can't even parse let alone process the whole 
firehose of bpo and GH PRs.

Is there  any way I can get bugs.python.org and github PRs to only tell 
me about things, preferably by email, that affect or involve unittest.mock?

cheers,

Chris