$ git clone -n https://github.com/xcp-ng-rpms/guest-templates-json.git /var/lib/mock/v8.3-incoming-6264-12515/root/chroot_tmpdir/scmroot/guest-templates-json
Cloning into '/var/lib/mock/v8.3-incoming-6264-12515/root/chroot_tmpdir/scmroot/guest-templates-json'...
$ git reset --hard 3c9e0c373e75f4b49afd3a728660cbe2cfb3f66f
fatal: Could not parse object '3c9e0c373e75f4b49afd3a728660cbe2cfb3f66f'.