I'd advocate for running libabigail against koji builds, if possible.
There are no updates in rawhide and I think it'd be useful to have abi
checks running on rawhide builds.

By "have this included wiht other fedora qa tasks", do you mean have
the git repo hosted in the same place?

If so, I'd say that's up to you but I expect to be moving all our repos
off of bitbucket and into something hosted in Fedora in the next month
or so. If you do decide that you want the task hosted that way, I'd
suggest waiting until we move all of our current repos so that there's
only one change.