Hi Branch names can contain slashes, so we can use 'development/foo' as a branch name. If I choose 'development' as a branch name, it doesn't work. There is a directory named development at '.git/refs/heads' directory. So we cannot create a file named development for 'refs/heads/development'. An error message may occurs like below. Unfortunately, It is not of help to me. 'error: 'refs/heads/development/foo' exists; cannot create 'refs/heads/development'. I think that dealing with a file system and an error message above is not sufficient for a novice like me. I hope that it should be improved. Thanks for your response. Leonardo YongUk KIM -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html