$DestDIR = 'C:Destination'
$OrigDIR = 'C:Origin'

Get-ChildItem $DestDIR | ForEach-Object {
    $DestName = $_.Name
    $DestPath = $_.FullName

    Get-ChildItem $OrigDir -Recurse | Where-Object {$_.Name -eq $DestName} | ForEach-Object {
        $OrigPath = $_.FullName
        Copy-Item $OrigPath $DestPath -Force
    }
}