Actually clear all tap caches.

Library/Homebrew/tap.rb

@@ -150,30 +150,40 @@ def initialize(user, repo)
  def clear_cache
  @remote = nil
  @repo_var_suffix = nil
+ remove_instance_variable(:@private) if instance_variable_defined?(:@private)
+
  @formula_dir = nil
- @cask_dir = nil
- @command_dir = nil
- @formula_names = nil
  @formula_files = nil
  @formula_files_by_name = nil
+ @formula_names = nil
+ @prefix_to_versioned_formulae_names = nil
+ @formula_renames = nil
  @formula_reverse_renames = nil
+
+ @cask_dir = nil
  @cask_files = nil
  @cask_files_by_name = nil
+ @cask_tokens = nil
+ @cask_renames = nil
  @cask_reverse_renames = nil
+
+ @command_dir = nil
+ @command_files = nil
+
  @alias_dir = nil
  @alias_files = nil
  @aliases = nil
  @alias_table = nil
  @alias_reverse_table = nil
- @command_files = nil
- @formula_renames = nil
+
  @tap_migrations = nil
+
  @audit_exceptions = nil
  @style_exceptions = nil
  @pypi_formula_mappings = nil
+
  @config = nil
  @spell_checker = nil
- remove_instance_variable(:@private) if instance_variable_defined?(:@private)
  end
 
  sig { void }