Javascript spreading an object’s properties array at specific index

Given a react hook and an object with array properties, I want to find a way to update the hook by using the spread operator at a specific properties index. Here is an example where I want to take the index 0 of the array in each property and spread it

const [{ a, b, c }, setState] = useState({ a : 'x', b : 'x', c : 'y' })

const temp = {
    a : ['x1', 'y1'],
    b : ['x2', 'y2'],
    c : ['x3', 'y3']
}

setState({...temp[0]})

/* Expected to be spread onto
*  setState({
*    a : 'x1',
*    b : 'x2',
*    c : 'x3'
*  })
*/

How would I achieve this? Am I looking at the wrong place to begin with by using the spread operator?

Things I have tried

• Tried looking into .filter() but I was not able to make it work
• Tried playing around with the [0] position and other syntaxes but with no success either