Firedrill: Recreate central git repository from developers clones

Question

Say you have a scenario with a central master git repository, which developers and CI-engines clone from. I.e. very close to a traditional non-distributed version control syste

Answer 1

Just create an empty repository and, from the fully updated clone, do:

git remote add new-origin url://to/new/origin

git push --tags new-origin refs/remotes/origin/*:refs/heads/*

Obviously, if the new origin is at the same url as the original one, you must be careful to not fetch from origin.