[yocto] linux-raspberrypi_4.19.bb unknown commit

[Jean-Christian de Rivaz]

Hi,

I try to use the Linux 4.19 for the RaspberryPi from the
meta-raspberrypi recipe linux-raspberrypi_4.19.bb but the commit
ab8652c03fa081b27de7e28a74c2536cb2aa3e5b from his SRCREV don't exists
into the repository github.com/raspberrypi/linux branch rpi-4.19.y . I
searched that commit on a few others branches but failed to find it.
Have anyone tested that recipe ?

Best Regards.
Jean-Christian