Oh, actually there is a better workaround: create a new repository in the desired format, then branch into it. This will be approximately as fast as upgrading in place (except for tiny upgrades) and it will avoid making a copy.
Oh, actually there is a better workaround: create a new repository in the desired format, then branch into it. This will be approximately as fast as upgrading in place (except for tiny upgrades) and it will avoid making a copy.