Branch (vcs-git-provider.Vcs_git_provider.Make.Branch)

type t = t

val rename_current_branch : 
  t ->
  repo_root:Vcs.Repo_root.t ->
  to_:Vcs.Branch_name.t ->
  (unit, Vcs.Err.t) Stdlib.Result.t

This translates to git branch --move NAME, which is used to enforce the name of a default branch during tests.