git: update to v2.9.1

[ps-cgit] / git

diff --git a/git b/git
index 05219a1276341e72d8082d76b7f5ed394b7437a4..5c9159de87e41cf14ec5f2132afb5a06f35c26b3 160000 (submodule)
--- a/git
+++ b/git
@@ -1 +1 @@
-Subproject commit 05219a1276341e72d8082d76b7f5ed394b7437a4
+Subproject commit 5c9159de87e41cf14ec5f2132afb5a06f35c26b3