Updates utils-git: 50fa88e Updates description for git-checkout-branch

diff --git a/utils-git b/utils-git
index 066f667a4dabd6e3f3aeaef2bc5135268b71d7f9..50fa88e6ee05f2077464769a9a33a0e7e9febb6e 160000 (submodule)
--- a/utils-git
+++ b/utils-git
@@ -1 +1 @@
-Subproject commit 066f667a4dabd6e3f3aeaef2bc5135268b71d7f9
+Subproject commit 50fa88e6ee05f2077464769a9a33a0e7e9febb6e