Save a repository as deprecated.

deprecate-repository.sh

repo_destiny -> marcuslilja/deprecated
repo_source -> marcuslilja/my-repository

git clone git@github.com:${repo_source}.git
git clean -fd
git reset --hard
git checkout master
git pull -f origin master
git checkout -B ${repo_source}
git push -f git@github.com:${repo_destiny}.git ${repo_source}