$ git clone -n https://github.com/xcp-ng-rpms/intel-i40e /var/lib/mock/v8.3-incoming-10357-28862/root/chroot_tmpdir/scmroot/intel-i40e
Cloning into '/var/lib/mock/v8.3-incoming-10357-28862/root/chroot_tmpdir/scmroot/intel-i40e'...
$ git fetch origin a66b0f8aa567ebb94aec9ec1a336d3abeffd1be4:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/intel-i40e
 * [new ref]         a66b0f8aa567ebb94aec9ec1a336d3abeffd1be4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a66b0f8 Merge pull request #2 from xcp-ng-rpms/8.3-XS8.3-2.25.11-4