From 50a43cf6780cc5380bb00d192296d91ebb3cddc9 Mon Sep 17 00:00:00 2001
From: Markus Reiter <me@reitermark.us>
Date: Fri, 25 May 2018 22:47:31 +0200
Subject: [PATCH] Reset `repo_var` in `clear_cache`.

---
 Library/Homebrew/compat/tap.rb | 3 +--
 Library/Homebrew/tap.rb        | 1 +
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Library/Homebrew/compat/tap.rb b/Library/Homebrew/compat/tap.rb
index 1fd53058a5..df720e35eb 100644
--- a/Library/Homebrew/compat/tap.rb
+++ b/Library/Homebrew/compat/tap.rb
@@ -15,10 +15,9 @@ class Tap
       old_path = path
       old_remote = path.git_origin
 
+      clear_cache
       super(new_user, new_repo)
 
-      @repo_var = nil
-
       new_initial_revision_var = "HOMEBREW_UPDATE_BEFORE#{repo_var}"
       new_current_revision_var = "HOMEBREW_UPDATE_AFTER#{repo_var}"
 
diff --git a/Library/Homebrew/tap.rb b/Library/Homebrew/tap.rb
index eec9c175ab..fa167c5a89 100644
--- a/Library/Homebrew/tap.rb
+++ b/Library/Homebrew/tap.rb
@@ -84,6 +84,7 @@ class Tap
   # clear internal cache
   def clear_cache
     @remote = nil
+    @repo_var = nil
     @formula_dir = nil
     @cask_dir = nil
     @formula_files = nil