Split the last two commits on the master branch into two separate branches

split-PRs.sh

#!/bin/bash

mkdir split-PRs
cd split-PRs

git init
touch file1
git add file1
git commit -m "Adding file1 (last commit on master)"

# PR1
touch file2
git add file2
git commit -m "Adding file2 (PR1)"

# PR2
cat<<EOF >> file1
Some more text for file1
EOF
git commit --all -m "Adding some text to file1 (PR2)"

# Split the last two commits into separate branches.
git checkout -b PR1 master^^
git cherry-pick master^

git checkout -b PR2 master^^
git cherry-pick master

# Remove those commits from master.
git checkout master
git reset --hard master^^