Use Homebrew's gitconfig for various commands

Git is a transport and storage mechanism for us so we don't want to
allow arbitrary customisation of this due to user issues e.g. #3664
and #3561.

Fixes #3664.

1 files changed, 6 insertions, 0 deletions

diff --git a/Library/Homebrew/utils/git.rb b/Library/Homebrew/utils/git.rb
index f1113af66..c50979b1e 100644
--- a/Library/Homebrew/utils/git.rb
+++ b/Library/Homebrew/utils/git.rb
@@ -60,6 +60,12 @@ module Utils
     raise "Git is unavailable" unless git_available?
   end
 
+  def self.with_homebrew_gitconfig
+    with_env(HOME: HOMEBREW_LIBRARY/"Homebrew/gitconfig") do
+      yield if block_given?
+    end
+  end
+
   def self.clear_git_available_cache
     @git = nil
     @git_path = nil