From mboxrd@z Thu Jan  1 00:00:00 1970
From: Junio C Hamano <gitster@pobox.com>
Subject: Re: [bug] git checkout lies about number of ahead commits when
 switching from detached HEAD
Date: Sat, 19 Mar 2011 17:35:37 -0700
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Cc: Piotr Krukowiecki <piotr.krukowiecki@gmail.com>,
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To: Jeff King <peff@peff.net>
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Jeff King <peff@peff.net> writes:

> but I'm not quite sure if this is the right place. Is it the
> responsibility of the checkout-orphan-warning code to clean up after
> itself, or is it the responsibility of a revision walker to clean up
> before itself?

Usually it is the former; the latter is generally impossible (unless it is
willing to clear everything), but the former knows where it started
traversal from.