license.clarify doesn't specify source of the crate

[kornelski]

I need to override incorrect license information of crates that come from private git repositories. Because these crates are internal/private, they happen to use simple common names like logger, which overlap with names of existing crates.io crates.

It seems that I can't specify clarify for a git crate, without it also applying to crates from crates.io and other registries. This risks allowing a crates.io crate with the same name but an unwanted license.