POST services hooks do not include tags or refs information.

When using the POST service and pushing a tag to a git repo (untested with hg) there is no information about the tag being pushed in the payload sent to the endpoint.

Additionally there is no refs information such as

"ref": "refs/heads/master"

(see here for example)

I am not suggesting that the services match githubs exactly (that would be nice though), but perhaps some inspiration could be drawn from them. As currently the information in a payload is either lacking, or superfluous (every commit in one array).