I think that Phabricator does not correctly handle git merge commits. In my particular case, I am experiencing the following issue...
I had set up a Herald rule so that if anyone modifies an `.arclint` or `.arcconfig` file, it triggers an audit by myself. Now, I have a bunch of audits waiting for me because people merged a change that //I// had made to the `.arcconfig` into their branch, which was later merged back into `master`.
i.e. Someone is working on a branch `X` and merges `master` in `X` (bringing with it a change to the `.arcconfig`). Later, branch `X` is merged into `master` and I get triggered for an audit.