$ git clone -n https://github.com/xcp-ng-rpms/xen.git /var/lib/mock/v8.2-incoming-5542-8939/root/chroot_tmpdir/scmroot/xen
Cloning into '/var/lib/mock/v8.2-incoming-5542-8939/root/chroot_tmpdir/scmroot/xen'...
$ git reset --hard 4bdbc81bac104b64e156fd93d7d1092beea5f55d
Downloading SOURCES/xen-4.13.5.tar.gz (6.2 MB)
HEAD is now at 4bdbc81 Security update: XSA-440, XSA-442, XSA-443 and XSA-444