You could store the state_dict directly or alternatively wrap the odict_keys and odict_values into lists and store them:
model = nn.Linear(1, 1)
sd = model.state_dict()

torch.save(list(sd.keys()), 'tmp1.pth') # use list, otherwise: TypeError: can't pickle odict_keys objects
torch.save(list(sd.values()), 'tmp2.pth')

Let me know, if I misunderstood your use case.