参考文献: 次世代高速オープンソースRDB Tsurugi (神林飛志 et al. 著) https://itecnote.com/tecnote/r-git-clone-works-git-submodule-fails-permission-denied/https://github.com/project-tsurugi/tsurugi_fdw/blob/master/README.md OS: Ubuntu 22.04Po…