$ git clone -n https://github.com/xcp-ng-rpms/iputils.git /var/lib/mock/v8.3-u-pcoval2-10408-28970/root/chroot_tmpdir/scmroot/iputils
Cloning into '/var/lib/mock/v8.3-u-pcoval2-10408-28970/root/chroot_tmpdir/scmroot/iputils'...
$ git fetch origin 37f387013e885953ef012095ceefc7b588685798:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/iputils
 * [new ref]         37f387013e885953ef012095ceefc7b588685798 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37f3870 bump release for test build