Reference file from root repository

[RajasGujarathi]

Currently using !import for importing docs

Version
mkdocs-multirepo-plugin=0.6.3

Root Repository

│  .gitignore
│   README.md
│   mkdocs.yml
├───docs
│       index.md
│       x.md

---

Imported Repository

│   .gitignore
│   README.md
│   mkdocs.yml
├───docs
│       index.md
│       page1.md
│       page2.md

mkdocs.yml

nav:
  - index.md
  - x.md         <--- 1. How to reference this

index.md

blabla bla blah blah [Reference to x.md](??) <--- 2. How to reference this

---

How to make such references ? Any help will be much appreciated