Git git = Git.init().setDirectory(...).call();
		RevCommit initialCommit = git.commit().setMessage("initial empty commit").call();
		RevCommit commitOnMaster = git.commit().setMessage("next empty commit").call();
		git.checkout().setCreateBranch(true).setName("side").setStartPoint(initialCommit).call();
		git.commit().setMessage("next empty commit on side").call();

		git.merge().include(commitOnMaster).setCommit(false).call();
		git.commit().setMessage("my special merge commit message").call();