Feature: Querystring-style Git ref syntax in ADD/COPY and fix short checksum resolution

Feature: Querystring-style Git ref syntax in ADD/COPY and fix short checksum resolution: a task in LegoFlow-SWE (Harbor dataset). Description Currently, Dockerfile’s ADD instruction supports Git URLs with a fragment syntax to specify a ref and subdirectory, e.g. https://example.com/repo.git…

The task

**Description** Currently, Dockerfile’s `ADD` instruction supports Git URLs with a fragment syntax to specify a ref and subdirectory, e.g. `https://example.com/repo.git#v1.0.0:subdir`. Querystring-based parameters, like `https://example.com/repo.git?tag=v1.0.0&subdir=dir`, are **not** supported, even though they are…

Part of Lego-X/LegoFlow-SWE.