You can clone with
HTTPS or Subversion.
$ twidge lsfollowers --all $USER
gives 100 lines of output, then pauses, then repeats the same 100 lines.
I was expecting a full list of all followers of $USER
I was going to report the same thing -- so I'll just add that lsfollowing does the same thing (repeats the same 100 users over and over).
The use of /statuses/followers to get the list of a user's followers also doesn't necessarily give a complete list and has been deprecated. See https://dev.twitter.com/docs/api/1/get/statuses/followers