Request: Support Shallow Checkout

### Is there an existing issue that is already proposing this?

- [X] I have searched the existing issues

### Describe the problem imposed by not having this feature

The checkout of the repo is taking too long while we need only one file

### Describe the solution you'd like

Add a step to clone the repo shallow, or just the file

### Other

_No response_

No files, tests, or entry points are named. Start by locating the orb's checkout or clone implementation and its existing tests or examples, then determine whether shallow checkout or fetching a single file is supported. Done means the requested checkout behavior is implemented and verified by the relevant tests.

Written by the indexing model from the issue text.