How to use the gitman.shell.mkdir function in gitman

def it_should_fail_on_missing_repositories(config):
        shell.mkdir("deps")
        shell.rm(os.path.join("deps", "gitman_1"))

        with pytest.raises(InvalidRepository):
            gitman.lock()

        expect(config.datafile.text).does_not_contain("")

def it_detects_invalid_repositories(config):
        shell.rm(os.path.join("deps", "gitman_1", ".git"))
        shell.mkdir(os.path.join("deps", "gitman_1", ".git"))

        try:
            with pytest.raises(InvalidRepository):
                expect(gitman.install('gitman_1', depth=1)) == False

        finally:
            shell.rm(os.path.join("deps", "gitman_1"))

def it_should_fail_on_invalid_repositories(config):
        shell.mkdir("deps")
        shell.rm(os.path.join("deps", "gitman_1", ".git"))
        shell.mkdir(os.path.join("deps", "gitman_1", ".git"))

        try:
            with pytest.raises(InvalidRepository):
                gitman.lock()

            expect(config.datafile.text).does_not_contain("")

        finally:
            shell.rm(os.path.join("deps", "gitman_1"))

def it_should_fail_on_invalid_repositories(config):
        shell.mkdir("deps")
        shell.rm(os.path.join("deps", "gitman_1", ".git"))
        shell.mkdir(os.path.join("deps", "gitman_1", ".git"))

        try:
            with pytest.raises(InvalidRepository):
                gitman.lock()

            expect(config.datafile.text).does_not_contain("")

        finally:
            shell.rm(os.path.join("deps", "gitman_1"))

force=False,
        force_interactive=False,
        fetch=False,
        clean=True,
        skip_changes=False,
    ):  # pylint: disable=too-many-locals
        """Download or update the specified dependencies."""
        if depth == 0:
            log.info("Skipped directory: %s", self.location_path)
            return 0

        sources = self._get_sources(use_locked=False if update else None)
        sources_filter = self._get_sources_filter(*names, sources=sources)

        if not os.path.isdir(self.location_path):
            shell.mkdir(self.location_path)
        shell.cd(self.location_path)
        common.newline()
        common.indent()

        count = 0
        for source in sources:
            if source.name in sources_filter:
                sources_filter.remove(source.name)
            else:
                log.info("Skipped dependency: %s", source.name)
                continue

            source.update_files(
                force=force,
                force_interactive=force_interactive,
                fetch=fetch,