My second attempt at importing the 2023 Branch failed.
Extensive report created as an issue on abapGit, but the question is, if you managed to successfully create the package with abapGit, why would it not work on our S/4 HANA 2023 system?
Please refer to the below:
abapGit/abapGit#6927
(If you like, I can repost everything here).