Updates utils-git: 97a8a06 Adds git-clean-unstaged

diff --git a/utils-git b/utils-git
index a7b22a8df6296982e3a4d81485c0056bd4fc4b55..97a8a06efc01ef34a8d7c830f231cf7476c3f582 160000 (submodule)
--- a/utils-git
+++ b/utils-git
@@ -1 +1 @@
-Subproject commit a7b22a8df6296982e3a4d81485c0056bd4fc4b55
+Subproject commit 97a8a06efc01ef34a8d7c830f231cf7476c3f582