[ Addendum 20181009: A lot of people have unfortunately missed the point of this article, and have suggested that I use BFG or reposurgeon. I have a small probl

[ Addendum 20181009: A lot of people have unfortunately missed the point of this article, and have suggested that I use BFG or reposurgeon. I have a small problem and a large problem. The small problem is how to remove some files from the repository. This is straightforward, and the tools mentioned will help with it. But because of the way Git works, the result is effectively a new repository. The tools will not help with the much larger problem I would have then: How to get 350 developers to migrate to the new repository at the same time. The approach I investigated in this article was an attempt to work around this second, much larger problem. ]