Hum, maybe I'm confused about what you're trying to accomplish then? You wrote "current Minix" which would be a much newer version than git-588a35b (which is the MINIX3.3.0 release revision). If you want to rebuild MINIX3.3.0 on MINIX3.3.0, you'd have to check out the MINIX3 source code and then reset your local checkout to revision 588a35b, or check out the R3.3.0 tag directly or so. The same can be done with 3.4.0rc2, for which the corresponding git commit number is in the ISO file name. Either way that should always work, so if you then still run into problems, please post more details, for example on how exactly you obtained the source code you are trying to rebuild etc..
Regards,
David