the first changes should be on HEAD and not on the release branch, so you should check out head.
if agreed (with the leadership team or OCT) to be in the next release, then it should go to the branch. I would place the other 2 changes there but wait until someone else confirms it.
And AFAIK there isn't a dotlrn alias or module so you should check out dotlrn-all to have the dotlrn package, either this or the whole repository :)