git filter-branch --subdirectory-filter error

[Jan Wielemaker <wielemak@science.uva.nl>]

Hi,

Finished a big re-shuffle of a big project, while other developers
continued. Worked really well. Thanks guys! But now I have two top
directories and I want to create two new repositories, each containing
one of these directories (because the one holds copyrighted data and we
want the other to become public software). So, I happily run

	$ git filter-branch --subdirectory-filter RDF HEAD

Where RDF is an existing directory.  I get:

Rewrite 95807fe01c39d3092e3ac3a98061711323154d77 (1/12)fatal: Not a valid 
object name 95807fe01c39d3092e3ac3a98061711323154d77:RDF
Could not initialize the index

I tried the procedure on some smaller test projects and it all worked
just fine. Running git version 1.5.3.4 on SuSE Linux. Also ran "git fsck
--full", which completed without any message.

Git show says:

gollem (eculture) 121_> git show 95807fe01c39d3092e3ac3a98061711323154d77 | 
cat
commit 95807fe01c39d3092e3ac3a98061711323154d77
Merge: 76d2935... 58afb98...
Author: Jan Wielemaker <wielemak@science.uva.nl>
Date:   Thu Oct 18 17:32:22 2007 +0200

    Merge branch 'master' of /home/eculture/eculture

Any clue?  

	Thanks --- Jan