$ git clone -n https://github.com/xcp-ng-rpms/kernel.git /var/lib/mock/v8.1-base-2043-1429/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/v8.1-base-2043-1429/root/chroot_tmpdir/scmroot/kernel'...
$ git reset --hard 3424ee126e7f0bb7f83a72e173943c55f59719b1
Downloading SOURCES/kernel-4.19.19.tar.gz (161 MB)
HEAD is now at 3424ee1 Merge branch 'XS-8.1'