t / t5100 / info0012on commit pre-commit.sample: Diff against the empty tree when HEAD is invalid (c30eb85)
   1Author: Dmitriy Blinov
   2Email: bda@mnsspb.ru
   3Subject: Изменён список пакетов необходимых для сборки
   4Date: Wed, 12 Nov 2008 17:54:41 +0300
   5