Hi Stephen! I'm excited to see this land in Debian. I'm curious if you know if there a free software backend that is compatible with the git-lfs protocol. If so, that'd be great to see in Debian as well one day.
If not, if I understand Policy correctly, you would need to take care to set the package's section to "contrib". See https://www.debian.org/doc/debian-policy/ch-archive.html for more information. (As I understand policy, if there *is* a git-lfs compatible backend that is free software, it's fine to have git-lfs in main, even if that backend isn't currently available in Debian.) Again, nice to see your enthusiasm, and I hope you can find a sponsor for this package.