def add_file_path_in_work_tree(self, path, work_tree, verbose=True):
        """
        Add a new file as blob in the storage and add its tree entry into the index.
        """
        args = ['--work-tree', work_tree, 'add', '-f']
        if verbose:
            args.append('--verbose')
        args.append(path)
        self.command_exec(args, show_output=verbose)
Add a new file as blob in the storage and add its tree entry into the index.