http mirror located at 

for gitorious opensuse/art 
http://geeko.ioda.net/git/art/

for gitorious opensuse-artwork 
http://geeko.ioda.net/git/opensuse-artwork/

for GitHub artwork
http://geeko.ioda.net/git/artwork/

you can have them by rsync (read-only checkout)

rsync://geeko.ioda.net/git/art
rsync://geeko.ioda.net/git/opensuse-artwork
rsync://geeko.ioda.net/git/artwork

All the mirrors are refreshed every 10 minutes

Have fun!