$ git clone -n https://github.com/xcp-ng-rpms/xapi.git /var/lib/mock/v8.3-incoming-9925-28597/root/chroot_tmpdir/scmroot/xapi
Cloning into '/var/lib/mock/v8.3-incoming-9925-28597/root/chroot_tmpdir/scmroot/xapi'...
$ git fetch origin 470b7c79cedc5b881b8cb30cc15695a9f8c415b0:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xapi
 * [new ref]         470b7c79cedc5b881b8cb30cc15695a9f8c415b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 470b7c7 Merge pull request #115 from xcp-ng-rpms/asv/8.3-fix-localhost-migration-ordering