v0.6.1 Hotfix release after refactor

Several issues are fixed, especially in cases with branch switches.
- git commands are using correct worktree now removing the possibility
  to embrangle repositories
- Fixing an issue upon branch switching in dependencies, when the branch
  is not yet fetched
- Fixing an issue upon branch switching: dependency now reloads its
  dependencies
- Fixing an issue upon branch switching: correct work-tree