OpenShift Origin takes advantage of preexisting source control management (SCM) systems hosted either internally (such as an in-house Git server) or externally (for example, on GitHub, Bitbucket, etc.). Currently, OpenShift Origin only supports Git solutions.
SCM integration is tightly coupled with builds, the two points being:
Creating a BuildConfig using a repository, which allows building your
application inside of OpenShift Origin. You can create a BuildConfig
manually or let
OpenShift Origin create it automatically by
inspecting your repository.
Triggering a build upon repository changes.