How To Pull In A Remote File

[potent niche]

How would I pull in just a single file from a git repo?

I can do dagger call my-func --directory=https://github.com/dagger/dagger 👍

But I can't do the following:

dagger call my-func --file=https://github.com/dagger/dagger/README.md

...

! failed to get value for argument "file": expected path selection for git repo

How To Pull In A Remote File

[stuck crater]

coming from here: https://github.com/dagger/dagger/blob/ccb4c2d98bce247d22c6b281126eac0ed7c41071/cmd/dagger/flags.go?plain=1#L416

here's an example: dagger call test --f="https://github.com/dagger/dagger#main:README.md"