$ git clone -n https://github.com/xcp-ng-rpms/kernel.git /var/lib/mock/v8.3-base-3841-3793/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/v8.3-base-3841-3793/root/chroot_tmpdir/scmroot/kernel'...
$ git reset --hard 30ac0e613f0a2acbf1f327e05e1c690dafab6f03
Downloading SOURCES/kernel-4.19.19.tar.gz (161 MB)
HEAD is now at 30ac0e6 Merge branch 'XS-8.3'