$ git clone -n https://github.com/xcp-ng-rpms/kernel.git /var/lib/mock/v8.1-testing-2797-2256/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/v8.1-testing-2797-2256/root/chroot_tmpdir/scmroot/kernel'...
$ git reset --hard 350bb0a4473bfd919a362c63d1aa6a2c43ef7921
Downloading SOURCES/kernel-4.19.19.tar.gz (161 MB)
HEAD is now at 350bb0a Merge branch 'XS-8.1' into 8.1