From bec303de86f9cef21a79ebea55da59dfa57fbdbb Mon Sep 17 00:00:00 2001
From: Jonathan Chang <jchang641@gmail.com>
Date: Sat, 11 Apr 2020 22:41:04 +1000
Subject: [PATCH] tap: update shallowing logic

Co-Authored-By: Mike McQuaid <mike@mikemcquaid.com>
---
 Library/Homebrew/cmd/tap.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Library/Homebrew/cmd/tap.rb b/Library/Homebrew/cmd/tap.rb
index ffb69b3b07..addde2b4af 100644
--- a/Library/Homebrew/cmd/tap.rb
+++ b/Library/Homebrew/cmd/tap.rb
@@ -55,8 +55,8 @@ module Homebrew
     else
       full_clone = if args.full?
         true
-      elsif args.shallow?.nil?
-        !ENV["CI"]
+      elsif !args.shallow?
+        ENV["CI"].blank?
       else
         !args.shallow?
       end