$ git clone -n https://github.com/xcp-ng-rpms/kernel.git /var/lib/mock/v8.1-testing-2946-2456/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/v8.1-testing-2946-2456/root/chroot_tmpdir/scmroot/kernel'...
$ git reset --hard fdc9fe9f8228b4a21bfaec0b5df935d2f130fe1b
Downloading SOURCES/kernel-4.19.19.tar.gz (161 MB)
HEAD is now at fdc9fe9 Security (XSAs 367 and 371) and bugfix update, backported from 8.2