// Commit a file to the repository
        def textFile = repo.workTree.file('source.txt')
        textFile << 'Hello world!'
        c1 = repo.commit('Initial commit')
        repo.createBranch('release')
        repo.createLightWeightTag('1.0.1')
        repo.createAnnotatedTag('v1.0.1', 'Release 1.0.1')
        def anotherSource = repo.workTree.file('dir/another.txt')
        anotherSource << 'Goodbye world!'