Good morning! As previously discussed: I now created a master branch which will contain the ongoing work in Apache OpenJPA 3.x. The 'trunk' git branch is now defunct and only kept for historical reasons. I'll add a small note in the README.
Please check out the master branch for futher work! Oh and a reminder again: To get the most recent OpenJPA code just use $> git clone https://gitbox.apache.org/repos/asf/openjpa.git. LieGrue, strub