Copiar uma branch completa para outro repositório

migrate.sh

#!/bin/bash

DIR="$PWD/TmpFolder"

rm -fr "$DIR"
mkdir "$DIR"

function git_from() {
    GIT_DIR="$PWD/.git-from" git -C "$DIR" $@
}

function git_to() {
    GIT_DIR="$PWD/.git-to" git -C "$DIR" "$@"
}

git_from rev-list --reverse master | while read commit_hash; do
    git_from reset --hard
    git_from clean -df
    git_from checkout $commit_hash

    commit_subject=$(git_from log --format=%s -n 1 $commit_hash)
    commit_date=$(git_from log --format=%ad -n 1 $commit_hash)

    git_to add .
    GIT_COMMITTER_DATE="$commit_date"
    git_to commit -m "$commit_subject" --date="$commit_date" --no-verify
done

rsync -a "$PWD/.git-to/" "$PWD/$DIR/.git/"