$ git clone -n https://github.com/xcp-ng-rpms/iputils.git /var/lib/mock/v8.3-incoming-10047-28689/root/chroot_tmpdir/scmroot/iputils
Cloning into '/var/lib/mock/v8.3-incoming-10047-28689/root/chroot_tmpdir/scmroot/iputils'...
$ git fetch origin 2ce8d022faee83d06eb7f32e81c53832fcd42e40:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/iputils
 * [new ref]         2ce8d022faee83d06eb7f32e81c53832fcd42e40 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ce8d02 Update obsolete patch macro with autosetup