Golang - Issues go get-ting basic commands "vet" and "godoc"

I've just installed Homebrew Go 1.2.2 on OSX Mavericks. Everything seems to be running fine, except that when I try either of the following commands:

$ go get code.google.com/p/go.tools/cmd/godoc
$ go get code.google.com/p/go.tools/cmd/vet

I get this stack trace:

/Users/sozorogami/go/src/code.google.com/p/go.tools/go/exact/exact.go:255: new(big.Rat).SetFrac(x.val, int1).Float32 undefined (type *big.Rat has no field or method Float32)
/Users/sozorogami/go/src/code.google.com/p/go.tools/go/exact/exact.go:255: not enough arguments to return
/Users/sozorogami/go/src/code.google.com/p/go.tools/go/exact/exact.go:257: x.val.Float32 undefined (type *big.Rat has no field or method Float32)
/Users/sozorogami/go/src/code.google.com/p/go.tools/go/exact/exact.go:257: not enough arguments to return

go gets to other repos seem to work fine.

Any ideas?

Looks like a big fail from their part, but if you look at the repo, you can see there are a branch for 1.3 and a branch for 1.2.

You can fix it by doing this:

cd ~/go/src/code.google.com/p/go.tools/go/exact
hg up release-branch.go1.2
go get code.google.com/p/go.tools/cmd/godoc

Note that if you try to update (go get -u), the repo will go back to the 'default' branch and it will fail again. Simply update to the correct branch after the update.