diff --git a/gitflow-common b/gitflow-common
index 70b137b..9702818 100644
--- a/gitflow-common
+++ b/gitflow-common
@@ -154,6 +154,10 @@
 	fi
 }
 
+git_repo_is_headless() {
+	! git rev-parse --quiet --verify HEAD >/dev/null 2>&1
+}
+
 gitflow_require_clean_working_tree() {
 	gitflow_test_clean_working_tree
 	local result=$?