$ git submodule update --init
Submodule 'cpu/cyclone' (git://notaz.gp2x.de/~notaz/cyclone68000.git) registered for path 'cpu/cyclone'
Submodule 'platform/libpicofe' (git://notaz.gp2x.de/~notaz/libpicofe.git) registered for path 'platform/libpicofe'
Cloning into '/tmp/picodrive/cpu/cyclone'...
Cloning into '/tmp/picodrive/platform/libpicofe'...
Submodule path 'cpu/cyclone': checked out 'b889883d36b2d247488c82d79d1eaab4dd41d236'
error: Server does not allow request for unadvertised object 2b27288eb44ef9247d2a948a207d3ac9b835421a
Fetched in submodule path 'platform/libpicofe', but it did not contain 2b27288eb44ef9247d2a948a207d3ac9b835421a. Direct fetching of that commit failed.