Difference between taking something by value or by pointer in Go

output.txt

&main.Something{}
(*interface {})(0xc42000e1e0)

receiver.go

package main

import "fmt"

type Something struct{}

func receiverByPointer(p interface{}) {
	fmt.Printf("%#v\n", p)
}

func receiverByValue(p interface{}) {
	fmt.Printf("%#v\n", &p)
}

func main() {
	receiverByPointer(&Something{})
	receiverByValue(Something{})
}