PowerShell - How do I call a cmdlet in a function when overriding that cmdlet's name with the same name as the function?

So I have a cmdlet named update-name that I have no access to change.

I have created a function named update-name (the same name as the cmdlet). How do I call the cmdlet from the function with the same name?

I've tried a few things and none of them seem to work.

function update-name {
param([string] something)
  #call cmdlet update-name here
}

There is a way to do it when it is just functions:

$unBackup = 'DefaultUpdateName'
if(!(Test-Path Function:\$unBackup)) {
    Rename-Item Function:\Update-Name $unBackup
}

function update-name {
  & $unName
}

Unfortunately that doesn't work if it is a CmdLet.