[dmooney1]

I'd love it if you could make this work with Atlassian Stash behind a firewall.

[mindsocket]

Stash has a number of integration points where similar checks could be applied, the most similar to GitCop being a merge check. That said, a pre-receive hook would make a lot more sense.

Disclosure: I work for Atlassian

[Gazler]

I'm not too familiar with Atlassian Stash, I will have a search around and see how plausible it would be to integrate.