diff --git a/Library/Homebrew/tap.rb b/Library/Homebrew/tap.rb
index c49a1f10da..ca24b32483 100644
--- a/Library/Homebrew/tap.rb
+++ b/Library/Homebrew/tap.rb
@@ -309,6 +309,8 @@ class Tap
 
     # Override user-set default template
     args << "--template="
+    # prevent fsmonitor from watching this repo
+    args << "--config" << "core.fsmonitor=false"
 
     begin
       safe_system "git", *args