$ git clone -n https://github.com/xcp-ng-rpms/xen.git /var/lib/mock/v8.1-testing-2623-2031/root/chroot_tmpdir/scmroot/xen
Cloning into '/var/lib/mock/v8.1-testing-2623-2031/root/chroot_tmpdir/scmroot/xen'...
$ git reset --hard 051a65160e908d14430cc77985c6fa8f893327ea
Downloading SOURCES/xen-4.13.0.tar.gz (6.1 MB)
HEAD is now at 051a651 Insert Ice Lake and Comet Lake model numbers