Let $K/k$ is a field extension and $G$ an affine group scheme over $K$. What are the Tannakian fundamental groups of these two $k$-tensor categories (with trivial fiber functors over $k$):
1. The category of pairs of finite vector spaces over $k$ with an isomorphism of their extensions to $K$,
2. The category of finite vector spaces $V$ over $k$ with a representation $\rho: G\to V\otimes_k K$$\rho: G\to \mathrm{GL}(V\otimes_k K)$.
Thanks!