As it seems this went unnoticed for many people:
The git URL has been changed. This is because of some reorganisation on SourceForge's path. Unfortunately, the old git repositry is still available, which can make you believe you get the latest, when you do not.
If you do not have an check in from 2013, you are on the wrong repository.
Have a look at https://sourceforge.net/p/opencbm/code/ci/master/tree/ to find out the new URL of the repository, or change it to git://git.code.sf.net/p/opencbm/code (RO access for non-developers) or ssh://USERNAME@git.code.sf.net/p/opencbm/code (RW access for developers) in order to get the latest.
I have announced this before on the developer's mailing list, but there was still confusion. That's why I am posting this here, so any non-developer is made aware of the fact, too.