writeTrashFile("c", "Hello world c");
FileUtils.createSymLink(new File(db.getWorkTree(), "a"), "c");
git.add().addFilepattern(".").call();
git.commit().setMessage("add symlink a").call();
Ref branch_1 = git.branchCreate().setName("branch_1").call();
git.rm().addFilepattern("a").call();
FileUtils.mkdirs(new File(db.getWorkTree(), "a"));
writeTrashFile("a/b", "Hello world b");
git.add().addFilepattern("a").call();
git.commit().setMessage("add folder a").call();