CURRENT_WORK_BRANCH = shift

# Save current master's commits
git checkout master
# git checkout -b new-master
git checkout master
git remote add upstream https://github.com/dogtagpki/jss.git

# Sync upstream
git checkout master
git fetch upstream

# Reset current master state
# OPTIONAL #
# git reset --hard upstream/master
# git push --force

# Then, checkout your PR branch and rebase off of master
git checkout $CURRENT_WORK_BRANCH
git rebase -i upstream/master
# <drop all but the last commit>
# <fix any rebase issues>
git push --force

-------------------------------------------------------------
Repeat for the other PR's once current one is committed.
I might need to resync master if there are other commits.
# NEXT_PLULL_REQUEST