diff --git a/Library/Homebrew/dev-cmd/bottle.rb b/Library/Homebrew/dev-cmd/bottle.rb
index e9b9e4b157f4a..9198dd67b835e 100644
--- a/Library/Homebrew/dev-cmd/bottle.rb
+++ b/Library/Homebrew/dev-cmd/bottle.rb
@@ -549,6 +549,7 @@ def merge(args:)
 
         unless args.no_commit?
           Utils::Git.set_name_email!
+          Utils::Git.setup_gpg!
 
           short_name = formula_name.split("/", -1).last
           pkg_version = bottle_hash["formula"]["pkg_version"]
diff --git a/Library/Homebrew/dev-cmd/pr-pull.rb b/Library/Homebrew/dev-cmd/pr-pull.rb
index b4dfd27e97a14..9ff0229c155f2 100644
--- a/Library/Homebrew/dev-cmd/pr-pull.rb
+++ b/Library/Homebrew/dev-cmd/pr-pull.rb
@@ -64,27 +64,6 @@ def pr_pull_args
     end
   end
 
-  def setup_git_environment!
-    # Passthrough Git environment variables
-    ENV["GIT_COMMITTER_NAME"] = ENV["HOMEBREW_GIT_NAME"] if ENV["HOMEBREW_GIT_NAME"]
-    ENV["GIT_COMMITTER_EMAIL"] = ENV["HOMEBREW_GIT_EMAIL"] if ENV["HOMEBREW_GIT_EMAIL"]
-
-    # Depending on user configuration, git may try to invoke gpg.
-    return unless Utils.popen_read("git config --get --bool commit.gpgsign").chomp == "true"
-
-    begin
-      gnupg = Formula["gnupg"]
-    rescue FormulaUnavailableError
-      nil
-    else
-      if gnupg.any_version_installed?
-        path = PATH.new(ENV.fetch("PATH"))
-        path.prepend(gnupg.any_installed_prefix/"bin")
-        ENV["PATH"] = path
-      end
-    end
-  end
-
   # Separates a commit message into subject, body, and trailers.
   def separate_commit_message(message)
     subject = message.lines.first.strip
@@ -375,7 +354,8 @@ def pr_pull
     mirror_repo = args.bintray_mirror || "mirror"
     tap = Tap.fetch(args.tap || CoreTap.instance.name)
 
-    setup_git_environment!
+    Utils::Git.set_name_email!
+    Utils::Git.setup_gpg!
 
     args.named.uniq.each do |arg|
       arg = "#{tap.default_remote}/pull/#{arg}" if arg.to_i.positive?
diff --git a/Library/Homebrew/dev-cmd/vendor-gems.rb b/Library/Homebrew/dev-cmd/vendor-gems.rb
index c336427a40bbf..f42945f2b2d93 100644
--- a/Library/Homebrew/dev-cmd/vendor-gems.rb
+++ b/Library/Homebrew/dev-cmd/vendor-gems.rb
@@ -35,10 +35,8 @@ def vendor_gems
       ohai "git add vendor/bundle"
       system "git", "add", "vendor/bundle"
 
-      if Formula["gpg"].optlinked?
-        ENV["PATH"] = PATH.new(ENV["PATH"])
-                          .prepend(Formula["gpg"].opt_bin)
-      end
+      Utils::Git.set_name_email!
+      Utils::Git.setup_gpg!
 
       ohai "git commit"
       system "git", "commit", "--message", "brew vendor-gems: commit updates."
diff --git a/Library/Homebrew/utils/git.rb b/Library/Homebrew/utils/git.rb
index e2f592d431f38..59025a3064a69 100644
--- a/Library/Homebrew/utils/git.rb
+++ b/Library/Homebrew/utils/git.rb
@@ -126,6 +126,13 @@ def set_name_email!(author: true, committer: true)
       ENV["GIT_COMMITTER_EMAIL"] = Homebrew::EnvConfig.git_email if committer
     end
 
+    def setup_gpg!
+      return unless Formula["gnupg"].optlinked?
+
+      ENV["PATH"] = PATH.new(ENV["PATH"])
+                        .prepend(Formula["gnupg"].opt_bin)
+    end
+
     def origin_branch(repo)
       Utils.popen_read(git, "-C", repo, "symbolic-ref", "-q", "--short",
                        "refs/remotes/origin/HEAD").chomp.presence