Is there a way to lock individual files or directories on fork when using git?

Question

We are a team of 60+ developers working on the same product and are moving from SVN to Git and GitHub. We have a process in SVN where in individual files are locked and when

Answer 1

No chance, if file is not mergeable and you need to lock it, use a centralized solution instead of GIT, i.e. SVN or ClearCase.