Fix torch.hub.load("pytorch/vision") fails to validate the master branch (#56138)
Summary:
We should iterate all pages of the branches API. Otherwise, even using "pytorch/vision" would fail to find master.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/56138
Reviewed By: heitorschueroff
Differential Revision: D27872346
Pulled By: ailzhang
fbshipit-source-id: 55881558f7980b1fb08b0d08ed6687a38df06edd
