Copy a commits from one Git repo to another

git-copy-file-history.sh

# Copy all modifications to a file from one repo to another
for c in `git --git-dir=../path/to/repo/.git log --reverse --pretty=tformat:"%H" -- path/to/file`; do
  git --git-dir=../path/to/repo/.git format-patch --keep-subject -1 --stdout $c | git am --3way --keep;
done

git-copy-single-commit.sh

# Copy a single commit from one repo to another
git --git-dir=../path/to/repo/.git format-patch --keep-subject -1 --stdout COMMIT | git am --3way --keep