$ git clone -n https://github.com/xcp-ng-rpms/xen.git /var/lib/mock/v8.3-incoming-4875-5690/root/chroot_tmpdir/scmroot/xen
Cloning into '/var/lib/mock/v8.3-incoming-4875-5690/root/chroot_tmpdir/scmroot/xen'...
$ git reset --hard f19a85cf804e46e33cadee73a55276b4f597c594
Downloading SOURCES/xen-4.13.5.tar.gz (6.2 MB)
HEAD is now at f19a85c Merge pull request #25 from xcp-ng-rpms/andrei-8.3-xen-backports