▶ git submodule update --init --recursive;
fatal: remote error: upload-pack: not our ref 7a9ed30a63ef7c046ebc62290d839fcda7808ed9
fatal: Fetched in submodule path 'fonts/src/UnicodeTests', but it did not contain 7a9ed30a63ef7c046ebc62290d839fcda7808ed9. Direct fetching of that commit failed.