Volgo_git_backend.RefsThis is exposed for tests and low-level usage.
val parse_ref_kind_exn : string -> Volgo.Vcs.Ref_kind.tmodule Dereferenced : sig ... endA ref_kind may appear several times in the lines, in which case it will be present both dereferenced and non-dereferenced. Because we want to retrieve the revisions each ref is pointed to, we only want to keep the dereferenced occurrences.
val parse_lines_exn : lines:string list -> Volgo.Vcs.Refs.tParsing the output of "git show-ref --dereference".