GHA: Allow test commit hashes not in the cached opam-repository to be used#6832

kit-ty-kate wants to merge 1 commit intoocaml:masterocaml/opam:masterfrom

kit-ty-kate:gha-future-opam-repository-test-shakit-ty-kate/opam:gha-future-opam-repository-test-shaCopy head branch name to clipboard