Yep just checked the dukio git, all of grafs work has been removed from it. Bit weird as the bootOS/lv9patcher & ps3tools have been left up :-s OK Sony, so you don't mind us fiddling really just as long as it aint with OtherOS!! :chin scratching:
If you want a copy you can get it from these alternative sites :D
1.
http://git-hacks.com/linux-ps3 - Githacks official repository
or you can grab my zipped versions from:
2.
http://www.filesonic.com/file/638123624 - graf_clone.zip
3.
http://www.filesonic.com/file/638123824 - linux2.6.zip