$ git clone -n https://github.com/xcp-ng-rpms/kernel-alt.git /var/lib/mock/v8.3-incoming-7221-18676/root/chroot_tmpdir/scmroot/kernel-alt
Cloning into '/var/lib/mock/v8.3-incoming-7221-18676/root/chroot_tmpdir/scmroot/kernel-alt'...
$ git reset --hard 320b655462aedf03fe21d301190a7d195ad0f115
Downloading SOURCES/kernel-4.19.320.tar.gz (166 MB)
HEAD is now at 320b655 Merge pull request #28 from xcp-ng-rpms/for-8.3/sync_with_main