Update notes for submitted changes

* Measure time taken for reachability checks

3c/5e159eaea16216c91316af40166c44de09dbec

@@ -0,0 +1,7 @@
+Verified+1: JGit Bot <jgit-bot@eclipse.org>
+Code-Review+2: Terry Parker <tparker@google.com>
+Submitted-by: Terry Parker <tparker@google.com>
+Submitted-at: Thu, 24 Sep 2020 11:17:19 -0400
+Reviewed-on: https://git.eclipse.org/r/c/jgit/jgit/+/168079
+Project: jgit/jgit
+Branch: refs/heads/master