How to paste files using Applescript (or bash)?
One way I can think of doing this is to use a little bit of AppleScriptObjC.  It provides access to the various data type representations on the clipboard, and in multiple.

After retrieving the full file paths, these can then be passed to the cp command.

Wrapping this in a bash function declaration:

pastefiles() {
    IFS=$'\n'
    fs=($( osascript -e "use framework \"Foundation\"
        property this : a reference to the current application
        property NSPasteboard : a reference to NSPasteboard of this
        property NSURL : a reference to NSURL of this
        property pb : a reference to NSPasteboard's generalPasteboard

        property text item delimiters : linefeed

        pb's readObjectsForClasses:[NSURL] options:[]
        (result's valueForKey:\"path\") as list as text" ))

    cp -r "${fs[@]}" "$1"
}


Usage: pastefiles~/Example/Destination/Path

You can add this to your .bashrc file to have the function available to each new shell session.