How to reset a remote Git repository to remove all commits?

Question

How can I reset a remote and local Git repository to remove all commits?

I would like to start fresh with the current Head as the initial commit.

Answer 1

First, follow the instructions in this question to squash everything to a single commit. Then make a forced push to the remote:

$ git push origin +master

And optionally delete all other branches both locally and remotely:

$ git push origin :
$ git branch -d