I am moving only section of an apps repo from one to another but was wondering if its possible to keep commit history like in fork on github.
It's possible. You can probably use git filter-branch. It's a powerful (but also fairly complicated) command. https://git-scm.com/docs/git-filter-branch
Exactly how to do it depends on exactly what you're trying to do (e.g. how the new repo's directory structure will look relative to the old one).