jdoe@linux-ltsd:~> zypper --root ~/chroot ar http://download.opensuse.org/factory/repo/oss OSS
Adding repository 'OSS' [done]
Repository 'OSS' successfully added
Enabled: Yes
Autorefresh: No
URI: http://download.opensuse.org/factory/repo/oss

jdoe@linux-ltsd:~> zypper --root ~/chroot ar http://download.opensuse.org/factory/repo/src-oss SRC
Adding repository 'SRC' [done]
Repository 'SRC' successfully added
Enabled: Yes
Autorefresh: No
URI: http://download.opensuse.org/factory/repo/src-oss

jdoe@linux-ltsd:~> zypper -vv --root ~/chroot ref
Verbosity: 2
Initializing Target
Specified repositories:
Checking whether to refresh metadata for OSS
Retrieving: http://download.opensuse.org/factory/repo/oss/media.1/media [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/content.asc [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/content.key [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/content [done]
New repository or package signing key received:
Key ID: B88B2FD43DBDC284
Key Name: openSUSE Project Signing Key <opensuse@opensuse.org>
Key Fingerprint: 22C07BA534178CD02EFE22AAB88B2FD43DBDC284
Repository: OSS

Do you want to reject the key, trust temporarily, or trust always? [R/t/a/?]: a
Retrieving: http://download.opensuse.org/factory/repo/oss/suse/setup/descr/dvd-11.2-9.2.i586.pat.gz [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/suse/setup/descr/ftp-11.2-9.2.i586.pat.gz [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/suse/setup/descr/non_oss-11.2-9.2.i586.pat.gz [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/suse/setup/descr/packages.DU.gz [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/suse/setup/descr/packages.en.gz [done (210.0 K/s)]
Retrieving: http://download.opensuse.org/factory/repo/oss/suse/setup/descr/packages.gz [done (214.1 K/s)]
Retrieving: http://download.opensuse.org/factory/repo/oss/suse/setup/descr/patterns [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/license.tar.gz [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/gpg-pubkey-0dfb3188-41ed929b.asc [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/gpg-pubkey-307e3d54-481f30aa.asc [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/gpg-pubkey-3d25d3d9-36e12d04.asc [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/gpg-pubkey-3dbdc284-49144c3f.asc [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/gpg-pubkey-56b4177a-47965b33.asc [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/gpg-pubkey-7e2e3b05-4816488f.asc [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/gpg-pubkey-9c800aca-481f343a.asc [done]
Retrieving: http://download.opensuse.org/factory/repo/oss/gpg-pubkey-a1912208-446a0899.asc [done]
Retrieving repository 'OSS' metadata [done]
Building repository 'OSS' cache [done]
Checking whether to refresh metadata for SRC
Retrieving: http://download.opensuse.org/factory/repo/src-oss/media.1/media [done]
Retrieving: http://download.opensuse.org/factory/repo/src-oss/content.asc [done]
Retrieving: http://download.opensuse.org/factory/repo/src-oss/content [done]
Retrieving: http://download.opensuse.org/factory/repo/src-oss/suse/setup/descr/packages.DU.gz [done]
Retrieving: http://download.opensuse.org/factory/repo/src-oss/suse/setup/descr/packages.en.gz [done]
Retrieving: http://download.opensuse.org/factory/repo/src-oss/suse/setup/descr/packages.gz [done]
Retrieving repository 'SRC' metadata [done]
Building repository 'SRC' cache [done]
All repositories have been refreshed.