Question How do I use multi-pass when I need to use standard Lit shader in URP?

Here is the situation:
I have objects that need to be rendered twice. First rendering is rendering to the scene, second rendering is rendering to the velocity buffer.
Right now I use two materials for one sub-mesh. It hints me to uses multi-pass. I think it makes sense because we reduce GL state changes by that.
To use multi-pass I encounter two problems:
1. Do I need to write the second pass in the same shaderlab file? Then how do I do that for URP's Lit shader? Is copying it out from packages the only option?
2. URP doesn't work like build-in pipeline which renders the shader passes in order. How do I render the object twice in URP without actually breaking GL state (mainly the vertex data)? I currently use render features to draw the mesh twice(which causes more GL state changes)
Thanks!