Update 2.14.1 release notes

Change-Id: I8ad09112fca7458f2e039cc69a2f96e8b16feed8
diff --git a/releases/2.14.md b/releases/2.14.md
index db158cb..275f216 100644
--- a/releases/2.14.md
+++ b/releases/2.14.md
@@ -235,6 +235,17 @@
   Plugins implementing LFS may now include support for
   [locking](https://github.com/git-lfs/git-lfs/blob/master/docs/api/locking.md).
 
+* Upgrade JGit to 4.7.1.201706071930-r.
+
+  This includes a fix to make auto GC run in the background.
+
+  In some cases, the auto GC limit is lower than the true number of
+  unreachable loose objects, so auto GC will run after every (e.g) fetch
+  operation.  This leads to the appearance of poor fetch performance.
+  Since these GCs will never make progress (until either the objects
+  become referenced, or the two week timeout expires), blocking on them
+  simply reduces throughput.
+
 * Allow multiple Servlet filters on Jetty HTTPD.
 
   It is now possible to specify multiple values for