$ git clone -n https://github.com/xcp-ng-rpms/xen.git /var/lib/mock/v8.0-testing-2687-2100/root/chroot_tmpdir/scmroot/xen
Cloning into '/var/lib/mock/v8.0-testing-2687-2100/root/chroot_tmpdir/scmroot/xen'...
$ git reset --hard f91d2a628035ad466f0a2ebcb74825ee17efa792
Downloading SOURCES/xen-4.11.1.tar.gz (6.1 MB)
HEAD is now at f91d2a6 Add XSA-286 patches