backports-4.20-rc5-1 was released. This is based on Linux 4.20-rc5.

https://mirrors.edge.kernel.org/pub/linux/kernel/projects/backports/stable/v4.20-rc5/backports-4.20-rc5-1.tar.xz


backports-4.19.7-1 was released. This is based on Linux 4.19.7.

https://mirrors.edge.kernel.org/pub/linux/kernel/projects/backports/stable/v4.19.7/backports-4.19.7-1.tar.xz


The source code can be found here:
https://git.kernel.org/cgit/linux/kernel/git/backports/backports.git/

Hauke