git-cherry-pick-pr.sh

#!/usr/bin/env bash

# call this with the pr number you want to apply and the base branch of that pr
#
# backport pr 5805, which was submitted against master, to 4.4:
#  git co 4.4
#  git cherry-pick-pr 5805
#
# backport pr 5840, which was submitted against 4.x, to 4.4:
#  git co 4.4
#  git cherry-pick-pr 5840 4.x
# 
#!/usr/bin/env bash

set -e

num="$1"
baseBranch="${2-master}"

# fetch the latest version of pr $num
git fetch -q upstream pull/$num/head
git cherry-pick -x "$baseBranch..FETCH_HEAD" --allow-empty-message --allow-empty

# after this is complete you can simply push the target branch to upstream