$ git clone -n https://github.com/xcp-ng-rpms/kernel.git /var/lib/mock/v8.3-testing-4391-4490/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/v8.3-testing-4391-4490/root/chroot_tmpdir/scmroot/kernel'...
$ git reset --hard d5afb21aeef2752e9c8b0f76918e466ded3c2052
Downloading SOURCES/kernel-4.19.19.tar.gz (161 MB)
HEAD is now at d5afb21 Merge branch 'XS-8.3'