diff --git a/Library/Homebrew/global.rb b/Library/Homebrew/global.rb
index 3aeedb202c..7bddc7d33d 100644
--- a/Library/Homebrew/global.rb
+++ b/Library/Homebrew/global.rb
@@ -7,8 +7,10 @@ HOMEBREW_HELP_MESSAGE = ENV.fetch("HOMEBREW_HELP_MESSAGE").freeze
 
 HOMEBREW_API_DEFAULT_DOMAIN = ENV.fetch("HOMEBREW_API_DEFAULT_DOMAIN").freeze
 HOMEBREW_BOTTLE_DEFAULT_DOMAIN = ENV.fetch("HOMEBREW_BOTTLE_DEFAULT_DOMAIN").freeze
-HOMEBREW_BREW_DEFAULT_GIT_REMOTE = ENV.fetch("HOMEBREW_BREW_DEFAULT_GIT_REMOTE").freeze
-HOMEBREW_CORE_DEFAULT_GIT_REMOTE = ENV.fetch("HOMEBREW_CORE_DEFAULT_GIT_REMOTE").freeze
+
+HOMEBREW_BREW_DEFAULT_GIT_REMOTE = ENV.delete("HOMEBREW_BREW_DEFAULT_GIT_REMOTE").freeze
+HOMEBREW_CORE_DEFAULT_GIT_REMOTE = ENV.delete("HOMEBREW_CORE_DEFAULT_GIT_REMOTE").freeze
+
 HOMEBREW_DEFAULT_CACHE = ENV.fetch("HOMEBREW_DEFAULT_CACHE").freeze
 HOMEBREW_DEFAULT_LOGS = ENV.fetch("HOMEBREW_DEFAULT_LOGS").freeze
 HOMEBREW_DEFAULT_TEMP = ENV.fetch("HOMEBREW_DEFAULT_TEMP").freeze
@@ -16,9 +18,11 @@ HOMEBREW_REQUIRED_RUBY_VERSION = ENV.fetch("HOMEBREW_REQUIRED_RUBY_VERSION").fre
 
 HOMEBREW_PRODUCT = ENV.fetch("HOMEBREW_PRODUCT").freeze
 HOMEBREW_VERSION = ENV.fetch("HOMEBREW_VERSION").freeze
+
 HOMEBREW_WWW = "https://brew.sh"
 HOMEBREW_API_WWW = "https://formulae.brew.sh"
 HOMEBREW_DOCS_WWW = "https://docs.brew.sh"
+
 HOMEBREW_SYSTEM = ENV.fetch("HOMEBREW_SYSTEM").freeze
 HOMEBREW_PROCESSOR = ENV.fetch("HOMEBREW_PROCESSOR").freeze
 HOMEBREW_PHYSICAL_PROCESSOR = ENV.fetch("HOMEBREW_PHYSICAL_PROCESSOR").freeze
@@ -33,13 +37,14 @@ HOMEBREW_USER_AGENT_FAKE_SAFARI =
   "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 " \
   "(KHTML, like Gecko) Version/17.0 Safari/605.1.15"
 HOMEBREW_GITHUB_PACKAGES_AUTH = ENV.fetch("HOMEBREW_GITHUB_PACKAGES_AUTH").freeze
-
 HOMEBREW_DEFAULT_PREFIX = ENV.fetch("HOMEBREW_GENERIC_DEFAULT_PREFIX").freeze
 HOMEBREW_DEFAULT_REPOSITORY = ENV.fetch("HOMEBREW_GENERIC_DEFAULT_REPOSITORY").freeze
-HOMEBREW_MACOS_ARM_DEFAULT_PREFIX = ENV.fetch("HOMEBREW_MACOS_ARM_DEFAULT_PREFIX").freeze
-HOMEBREW_MACOS_ARM_DEFAULT_REPOSITORY = ENV.fetch("HOMEBREW_MACOS_ARM_DEFAULT_REPOSITORY").freeze
-HOMEBREW_LINUX_DEFAULT_PREFIX = ENV.fetch("HOMEBREW_LINUX_DEFAULT_PREFIX").freeze
-HOMEBREW_LINUX_DEFAULT_REPOSITORY = ENV.fetch("HOMEBREW_LINUX_DEFAULT_REPOSITORY").freeze
+
+HOMEBREW_MACOS_ARM_DEFAULT_PREFIX = ENV.delete("HOMEBREW_MACOS_ARM_DEFAULT_PREFIX").freeze
+HOMEBREW_MACOS_ARM_DEFAULT_REPOSITORY = ENV.delete("HOMEBREW_MACOS_ARM_DEFAULT_REPOSITORY").freeze
+HOMEBREW_LINUX_DEFAULT_PREFIX = ENV.delete("HOMEBREW_LINUX_DEFAULT_PREFIX").freeze
+HOMEBREW_LINUX_DEFAULT_REPOSITORY = ENV.delete("HOMEBREW_LINUX_DEFAULT_REPOSITORY").freeze
+
 HOMEBREW_PREFIX_PLACEHOLDER = "$HOMEBREW_PREFIX"
 HOMEBREW_CELLAR_PLACEHOLDER = "$HOMEBREW_CELLAR"
 # Needs a leading slash to avoid `File.expand.path` complaining about non-absolute home.