pvaneynd

If you are using something like git.debian.org to share repositories and you have done major surgery that makes that 'master' became invalid this is easy to fix in your local repository:

git checkout new-master
git branch -D master
git branch -m new-master master

but what do you do with the bare repository on git.debian.org? Well you can do:

git branch -m master old-master
git branch -m new-master master
git symbolic-ref HEAD refs/heads/master
git branch -D old-master

of course anybody who was following this git repository now has problems ...