M-x magit-checkout, I can only select a branch.
Is it possible to visit a commit (the stage at the commit) using Magit?
From the magit log buffer (l l (lowercase
L twice)), go on the desired commit with the point (cursor) and if you press b b (checkout branch/revision) the commit at point will be proposed for checkout.
Otherwise with enter on the commit you will see the content of the commit without checkout into it.