$ git clone -n https://github.com/xcp-ng-rpms/kernel.git /var/lib/mock/v8.0-testing-1484-824/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/v8.0-testing-1484-824/root/chroot_tmpdir/scmroot/kernel'...
$ git reset --hard 34c1ceac003b2d422365087c0422a58aaecefff3
Downloading SOURCES/kernel-4.19.19.tar.gz (161 MB)
HEAD is now at 34c1cea Fix security issue XSA-300 for dom0