== Users

- art — project lead
- bob — end user
- cab — collab dev (push rights)
- dim — forker dev (no push rights)
- ell — third party repo owner

== Repos
- art/gallery  — art's main repo
- art/painting — subrepo owned by art
- ell/tickets  — subrepo owned by ell

== Starting histories:
- art/gallery  — A---B
- art/painting — P---Q
- ell/tickets  — T

== Scenario 1
art art/gallery$ git log
A---B
art art/gallery$ git subrepo clone art/painting
art art/gallery$ ls
painting/
art art/gallery$ git log
A---B---C
       /
     Q'
art art/gallery$ 



