revision

type GitRepo struct {
	*git.Repository
}

type GitSystem struct{}

type Reference struct {
	Branch  string `json:"branch"`
	Hash    string `json:"hash"`
	Author  string `json:"author"`
	Message string `json:"message"`
}

type Repo interface {
	System() string
	Head() (Reference, error)
	RemoteHead() (Reference, error)
	RemoteURL() (string, error)
	Fetch(ctx context.Context) error
	Update() error
}

type System interface {
	Name() string
	Open(path string) (Repo, error)
}