def new(cls, repo, *tree_sha): """ Merge the given treeish revisions into a new index which is returned. This method behaves like git-read-tree --aggressive when doing the merge. :param repo: The repository treeish are located in. :param tree_sha: 20 byte or 40 byte tree sha or tree objects :return: New IndexFile instance. Its path will be undefined. If you intend to write such a merged Index, supply an alternate file_path to its 'write' method.""" base_entries = aggressive_tree_merge(repo.odb, [to_bin_sha(str(t)) for t in tree_sha]) inst = cls(repo) # convert to entries dict entries = dict(izip(((e.path, e.stage) for e in base_entries), (IndexEntry.from_base(e) for e in base_entries))) inst.entries = entries return inst