Old version of iOS app after Time Machine restore

Running OSX 10.10.1 Yosemite. Xcode 6.1.1. I was running 10.10 and it was terribly slow, so I did a back up with Time Machine, and did a clean install of 10.10. It made everything much faster, if anyone was wondering. I used Migration Assistant and when I went to open my project, it was a version that is almost 6 months old.

The only thing that I could think of is that was probably the last time I made a commit to my local git repository. But if that is the case I would hope that the files are available somewhere. Any help is much appreciated.