git-cpr

#!/bin/sh

current=`git branch | sed -n '\/* /s///p'`
destiny=${1:-master}

# 1. Update destiny
git fetch
git checkout $destiny
[[ $? == 0 ]] || exit "failed to switch to $destiny"
git rebase

# 2. rebase PR branch
git checkout $current
git rebase $destiny
[[ $? == 0 ]] || exit "failed to rebase from $destiny"
git rebase -i $destiny

# 3. merge
git push -f
git checkout $destiny
git merge --ff-only $current
git push

# 4. remove branch
git push origin :$current
git branch -d $current