Any way to use buildRustPackage with with private/ssh dependencies?

I’m struggling trying to port all my code from Ubuntu to a NixOS server.

Any workaround for https://github.com/NixOS/nixpkgs/issues/37010 ?

error: failed to sync

Caused by:
  failed to load pkg lockfile

Caused by:
  failed to load source for a dependency on `some-other-crate`

Caused by:
  Unable to update ssh://git@gitlab.com/bbigras/some-crate.git#927b81a1

Caused by:
  failed to clone into: /build/source/cargo-home.tVR/git/db/some-crate-72fbdbe960544b3c

Caused by:
  failed to authenticate when downloading repository
attempted ssh-agent authentication, but none of the usernames `git` succeeded

Caused by:
  error authenticating: no auth sock variable; class=Ssh (23)