type commit = Commit.key
The type for store heads.
type branch = Branch.key
The type for branch IDs.
val fetch : t -> ?depth:int -> endpoint -> branch -> ( commit option, [ `Msg of string ] ) result Lwt.t
fetch t uri fetches the contents of the remote store located at
uri into the local store
t. Return the head of the remote branch with the same name, which is now in the local store.
No_head means no such branch exists.