$ git clone -n https://github.com/xcp-ng-rpms/xen.git /var/lib/mock/v8.3-testing-4507-4767/root/chroot_tmpdir/scmroot/xen
Cloning into '/var/lib/mock/v8.3-testing-4507-4767/root/chroot_tmpdir/scmroot/xen'...
$ git reset --hard 54775d3d5900b6af5088238106e81e5a758733bc
Downloading SOURCES/xen-4.13.5.tar.gz (6.2 MB)
HEAD is now at 54775d3 Merge branch 'XS-8.3'