Bamboo's Git code does not seem to initialize submodules

Bamboo has been working fine with me until now, but I've recently changed my git repo to include a submodule. Bamboo is now stuck at the fetch stage with this error message:

Error occurred while executing the build for BUILDNAME : Checkout to revision 2ae68669f7aa1fd6dc3855168f5a3b35deccb5de has failed.Missing unknown c8d9bfe6ceac1d49f338589bc2978e9a3a1d71dd

2ae68669f7aa1fd6dc3855168f5a3b35deccb5de is the hash for the project and c8d9bfe6ceac1d49f338589bc2978e9a3a1d71dd is the hash for the submodule.

I'm not a expert git user, but I think the fix is fairly easy: the git fetch code is missing a "git submodule init", or "git submodule update".