This fork was made from the Google Code SVN repo at revision 1772. Info:

Working Copy Root Path: /Users/eirikur/code/blockly
URL: http://blockly.googlecode.com/svn/trunk
Repository Root: http://blockly.googlecode.com/svn
Repository UUID: c400ca83-b69d-9dd7-9705-49c6b8615e23
Revision: 1772
Node Kind: directory
Schedule: normal
Last Changed Author: blockly@translatewiki.net
Last Changed Rev: 1772
Last Changed Date: 2014-10-06 10:04:59 +0000 (Mon, 06 Oct 2014)

Shortly thereafter it was moved to github but it's hard to tell which SHA is the same:

Maybe the first migration commit comes close:

https://github.com/google/blockly/commit/d998a1c8ec768a4a6f5ed1268826b62dfaa85a36