post-receive.sh

########################################
# File: /usr/bin/deploy
########################################

#!/bin/sh

REF_NAME=$1
DEPLOY_BRANCH=$2
REMOTE_PROJECT_PATH=$3
REMOTE_SERVER=$4
REMOTE_PORT=$5
REMOTE_USER=$6

_DIR_NAME=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)
_TMP_PATH=/tmp
_FULL_DIR_PATH=$_TMP_PATH/$_DIR_NAME

if [[ $# -eq 0 ]] ; then
  echo "Arguments: refname branch remotepath server port user"
  exit 1
fi

if [ $REF_NAME = "refs/heads/$DEPLOY_BRANCH" ]
then
  echo "### Deploying to $DEPLOY_BRANCH"
  echo "### Creating temporary checkout of $DEPLOY_BRANCH."
  mkdir $_FULL_DIR_PATH
  GIT_WORK_TREE=$_FULL_DIR_PATH git checkout -q -f $DEPLOY_BRANCH
  echo "### Copying to remote server: "
  rsync -az --exclude-from=$_FULL_DIR_PATH/.gitignore \
    --force --delete --rsh="ssh -p$REMOTE_PORT" \
    $_FULL_DIR_PATH/ $REMOTE_USER@$REMOTE_SERVER:$REMOTE_PROJECT_PATH
  echo "### Cleaning up."
  rm -rf $_FULL_DIR_PATH
  echo "### Deployed successfully!"
fi

Implementation:

########################################
# File: /some/repo/hooks/post-receive
########################################

#!/bin/bash
read oldrev newrev refname

deploy staging /var/www/my-project/staging/ 198.101.153.95 22 dev