#!/bin/bash
mv $GVM_ROOT/git.bak $GVM_ROOT/.git
if [ $? -ne 0 ]; then
  echo "Couldn't find git info"
  exit 1
fi
cd $GVM_ROOT && git checkout -f
if [ $? -ne 0 ]; then
  echo "Failed to clean install"
  exit 1
fi
if [[ -n $1 ]]; then
  cd $GVM_ROOT && git checkout $1 -f
  if [ $? -ne 0 ]; then
    echo "Failed to checkout $1 branch"
    exit 1
  fi
fi
cd $GVM_ROOT && git pull
if [ $? -ne 0 ]; then
  echo "Failed to update"
  exit 1
fi
mv $GVM_ROOT/.git $GVM_ROOT/git.bak
if [ $? -ne 0 ]; then
  echo "Couldn't backup git info"
  exit 1
fi