Usage: aptly mirror create <name> <archive url> <distribution> [<component1> ...]

Create records information about new mirror and fetches Release file (it doesn't download packages).

PPA url could specified in short format when running on Debian/Ubuntu:
  $ aptly mirror create some_ppa ppa:user/project

ex:
  $ aptly mirror create wheezy-main http://mirror.yandex.ru/debian/ wheezy main

Options:
  -ignore-signatures=false: disable verification of Release file signatures
  -keyring=: gpg keyring to use when verifying Release file (could be specified multiple times)
  -with-sources=false: download source packages