Migrate Git repos between sources

migrate-git-template.sh

#Tweaked from https://blogs.s-osg.org/retain-history-moving-files-git-repositories/

# Pull your new location
git clone <your new repo>
cd /path/to/new/repo

# Link to old location and crate a branch off it
git remote add old-location ssh://git@github.com/organization/repo.git # or HTTPS
git fetch old-location

# Set master to target branch
git checkout -b master old-location/master

# Push to your new location
git push origin master

# Unlink the old location
git remote remove old-location