diff --git a/Library/Homebrew/system_config.rb b/Library/Homebrew/system_config.rb
index fe0556b50466d..b2f3be5ae83f6 100644
--- a/Library/Homebrew/system_config.rb
+++ b/Library/Homebrew/system_config.rb
@@ -34,6 +34,11 @@ def homebrew_repo
       GitRepository.new(HOMEBREW_REPOSITORY)
     end
 
+    sig { returns(String) }
+    def branch
+      homebrew_repo.branch_name || "(none)"
+    end
+
     sig { returns(String) }
     def head
       homebrew_repo.head_ref || "(none)"
@@ -142,6 +147,7 @@ def homebrew_config(out = $stdout)
       out.puts "ORIGIN: #{origin}"
       out.puts "HEAD: #{head}"
       out.puts "Last commit: #{last_commit}"
+      out.puts "Branch: #{branch}"
     end
 
     def homebrew_env_config(out = $stdout)