RevCommit m2 = master.commit().parent(s1)
.add("f", "1-master-r\n2\n3-side\n").add("s.m", "1")
.add("s.c", "0").rm("s.d").message("m2(merge)").create();
Git git = Git.wrap(db);
git.checkout().setName("master").call();
modifyWorktree(worktreeState, "f", "side");
modifyIndex(indexState, "f", "side");
ResolveMerger merger = (ResolveMerger) strategy.newMerger(db,
worktreeState == WorktreeState.Bare);