This bug was fixed in the package etckeeper - 1.18.1ubuntu3
--------------- etckeeper (1.18.1ubuntu3) xenial; urgency=medium
* properly merge preinst and postinst to fix initial commit on fresh install, LP: #1532615
-- Nobuto Murata <email address hidden> Mon, 11 Jan 2016 07:02:16 +0900
This bug was fixed in the package etckeeper - 1.18.1ubuntu3
---------------
etckeeper (1.18.1ubuntu3) xenial; urgency=medium
* properly merge preinst and postinst to fix initial commit on
fresh install, LP: #1532615
-- Nobuto Murata <email address hidden> Mon, 11 Jan 2016 07:02:16 +0900