On Wed, Jan 23, 2013 at 8:34 PM, Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx> wrote: > add_submodule_odb() can be used to import objects from another > repository temporarily. After this point we don't know which objects > are ours, which are external. If we create an object that refers to an > external object, next time git runs, it may find a hole in the object > graph because the external repository may not be imported. The same > goes for pointing a ref to an external SHA-1. > > To protect ourselves, once add_submodule_odb() is used: > > - trees, tags and commits cannot be created > - refs cannot be updated .. and soon after I pressed send, I realized I missed at least two other places write should not be allowed: - index - reflog But the general idea is probably more important than implementation details at this stage. -- Duy -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html