I guess my last sentence there doesn't explicitly state that but I assumed if anyone clicked on that link they would get the picture.
The problem seems to be that you can't use this in front of other repository, for example Gitlab
You can use phabricator (and its command line tool Arcanist) with a repository in GitHub, Gitlab, or even your own local repo host. You just configure phabricator to use an external repo as the remote (by adding a URI to it and setting the mode to "observe"). See here: https://secure.phabricator.com/book/phabricator/article/diff...