Fix history

Currently for every MR we get all the history of the repositor.

See below where for a simple MR with 5 commits there are 277 commits that show up.

This is very problematic since quickly merging will becomes extremely painful and there are already strange artifacts, e.g. the fact that every MR tries to close a JIRA ticket which was mentioned in a commit message 200 commits ago...

Perhaps this needs a rebasing or so - need to understand how to fix it.