Initializes a new repo and merges it with a new origin

init_add_origin.sh

#!/usr/bin/env bash

# init repo and initially add all files
# ignore should exist before already
git init
git add -A
git commit -a -m "initial files added"

# add the new remote and merge them
git remote add origin $1
git fetch
git branch --set-upstream-to=origin/master master
git pull --allow-unrelated-histories
git pull --no-edit origin master
git push origin master