#!/bin/bash

refname="$1" 
oldrev="$2" 
newrev="$3" 
 
if [ -z "$refname" -o -z "$oldrev" -o -z "$newrev" ]; then 
    echo "Usage: $0 <ref> <oldrev> <newrev>" >&2 
    echo "  where <newrev> is relevant only" >&2
    exit 1 
fi 

padadoy update $newrev