Running elevated commands from a non-elevated git-bash with the ability to pipe/redirect the output of the elevated command.

elevate.sh

#!/usr/bin/env bash
elevate() {
    powershell -Command "Start-Process cmd -ArgumentList  \"/c\",\"$1 2>&1 | clip\" -Verb RunAs"
    powershell -sta "add-type -as System.Windows.Forms; [windows.forms.clipboard]::GetText()"
}