Rails routing to multiple route

Rails routing to multiple route

I'm using devise for rails. I have the following route for devise.
devise_for :user
Which routes to 'user/sign_in' and several other.
So I want to change this route to: get 'login'. Is this possible? I tried
doing
match 'login', to: 'user/sign_in', via: :get
Which did not work as well, what am I doing wrong, and what does the above
code do?