I was wondering how I could bring my fork synchronized with Ola's version again, and found the answer in this guide on GitHub. It turns out all I have to do is, though this is locally:
$ git remote add olas git://github.com/olas/bioclipse.qsar.gitThis gets me into the following state:
$ git pull olas master
This gitk output show that my local master branch is identical to Ola's master branch on GitHub, while both are three commits ahead of my current master branch at GitHub.
Right after this, I updated my fork at GitHub with a simple git push, resulting in this gitk output: