Irmin_git.Atomic_write
Use Git as an atomic-write store. Values will be stored into .git/refs. When using the Git filesystem backend, branch names .
.git/refs
module G : Git.S
module type S = Irmin.Atomic_write.S with type value = G.Hash.t
module Make (K : Irmin.Branch.S) : S with type key = K.t