#!/bin/sh -x
NEW_BASE=${1?"Usage: $0 <newbase>"}
 
CURRENT=`git branch | grep '\*' | awk '{print $2}'`
 
git checkout reviewed || git checkout -b reviewed ${NEW_BASE} || exit 1
git rebase ${NEW_BASE} || exit 1
git checkout ${CURRENT}
 
 
# Assumption: you have a branch named 'reviewed' which is used to track the latest reviewed revision. 
# If the branch 'reviewed' does not exist, it will be automatically created.
# 
# Invocation: 
# ./reviewed.sh 369b5cc
# 
# This will change reviewed to point to the revision 369b5cc. 
# 
# If you make commits to the 'reviewed' branch, these are kept when marking a new revision as reviewed.