Update Objective-Git

tiennou · tiennou · commit 6c43b53d3b33 · 2018-11-20T21:36:25.000+01:00
diff --git a/External/objective-git b/External/objective-git
@@ -1 +1 @@
-Subproject commit c85a35f6dd6072e5c74748b9bf01f6e2b764dfee
+Subproject commit 15d56e7c4ac641fceaa50e76ce09ff0bc83aed03
