From: Thomas Glanzmann <thomas@glanzmann.de>
Date: Fri, 08 Jun 2007 10:08:31 GMT
Subject: fatal: ambiguous argument 'HEAD': unknown revision or path not in the working tree.
Message-ID: <20070608100831.GA2335@cip.informatik.uni-erlangen.de>

Hello,

        (s017241) [/usr/src/linux-2.6] git checkout v2.6.20
        warning: You appear to be on a branch yet to be born.
        warning: Forcing checkout of v2.6.20.
        fatal: ambiguous argument 'HEAD': unknown revision or path not in the working tree.
        Use '--' to separate paths from revisions
        Cannot detach HEAD

(s017241) [/usr/src/linux-2.6] git version
git version 1.5.2.1

what is going wrong here?

        Thomas