Moving git repository and all its branches, tags to a new remote repository keeping commits history

migrate-from-github-to-bitbucket.sh

#!/bin/bash
set -euo pipefail

read -p "Github repo to clone:  " gh
read -p "Bitbucket destination: " bb
read -p "Github username:       " ghu
read -p "Bitbucket username:    " bbu

git clone https://github.com/$ghu/$gh

pushd $gh

# Fetch all of the remote branches and tags:
git fetch origin

# View all "old repo" local and remote branches:
git branch -a

for br in `git branch -a --list | grep -v "\->" | grep "remotes\/origin" | awk -F"/" '{print $3}' | grep -vE "^master$" | sed 's/\#/\\#/'`; d\
o
    # checkout to create a local copy of all branches to ensure none are missing:
    git checkout -b $br origin/$br
done

git remote add new-origin https://$bbu@bitbucket.com/$bbu/$bb

git push --all new-origin
git push --tags new-origin

git remote -v
git remote rm origin
git remote rename new-origin origin
git remote set-url --push origin https://$bbu@bitbucket.com/$bbu/$bb

# echo >> .gitignore
# git commit -m 'Force remote update'

git push -u origin master

popd