Summary

This pull request modifies `ghq get` to automatically use `git submodule add` when cloning a repository into a directory that is already within another Git repository's worktree. This aims to streamline the management of ghq roots as Git repositories, for use cases like syncing local stubs.

Changes

Impact Areas

Files Changed

• cmd/ghq/get.go
• protocol/git.go
• test/integration/get_test.go