How to make sure developers use new git remote after repository migration

Question

Every answer about migrating git repo says:

git clone --mirror git@github/odlrepo.git
git push --mirror git@github/newrepo.git

But nobody says, what to do after...

How to force developers to use newrepo?

Solutions that I came with are:

• git hook on oldrepo which will push changes to newrepo (but if developers keep pushing to both - it seems like its asking for troubles)
• git hook which blocks commits and says "change remote, we are using now newrepo

But maybe there are some better solutions?

Answer 1

Without having to manage hooks, you could:

• protect your old repo branches in order to disable any push
• empty the content of the master branch to leave only a README which clearly explain the situation, asking for developers to now clone from or push to the new repository.