templates / hooks--post-update.sampleon commit tree-diff: convert diff_root_tree_sha1() to just call diff_tree_sha1 with old=NULL (0b707c3)
   1#!/bin/sh
   2#
   3# An example hook script to prepare a packed repository for use over
   4# dumb transports.
   5#
   6# To enable this hook, rename this file to "post-update".
   7
   8exec git update-server-info