$ git clone -n https://github.com/xcp-ng-rpms/kernel-alt.git /var/lib/mock/v8.3-incoming-6249-12485/root/chroot_tmpdir/scmroot/kernel-alt
Cloning into '/var/lib/mock/v8.3-incoming-6249-12485/root/chroot_tmpdir/scmroot/kernel-alt'...
$ git reset --hard dc3bb1c16c9017a942d241178316e53aef873b4c
Downloading SOURCES/kernel-4.19.19.tar.gz (161 MB)
HEAD is now at dc3bb1c Merge pull request #22 from xcp-ng-rpms/bin-updategrub