return git.tag().setName(tagName).call();
    }

    public Ref createAnnotatedTag(String tagName, String message) throws GitAPIException {
        return git.tag().setName(tagName).setAnnotated(true).setMessage(message).call();
    }

    public Ref getHead() throws IOException {
        return git.getRepository().findRef("HEAD");
    }

    @Override
    public TestFile getWorkTree() {