github_fork.sh

#!/bin/bash

# adjusts remotes of local repo if forking after clone (move origin -> upstream, add fork as origin)

set -u
set -e

die () {
  echo >&2 "### $@"
  exit 1
}

username=d10r

# get upstream url (which is currently configured for origin remote)
upstream_url=$(git config --get remote.origin.url)
echo $upstream_url | grep -q "github.com" || die "seems not to be a github repo"

# build fork url
regex="s/.*https:\/\/github.com\/.*\/\(.*\)/ssh:\/\/git@github.com\/$username\/\1/"
fork_url=$(echo $upstream_url | sed $regex)

# set fork as new origin remote
git remote set-url origin $fork_url

# add upstream

git remote add upstream $upstream_url

echo "moved origin to upstream and added fork as new origin: $fork_url"