$ git clone -n https://github.com/xcp-ng-rpms/neon.git /var/lib/mock/v8.3-u-pcoval1-11165-29573/root/chroot_tmpdir/scmroot/neon
Cloning into '/var/lib/mock/v8.3-u-pcoval1-11165-29573/root/chroot_tmpdir/scmroot/neon'...
$ git fetch origin 208ea5f047454c28933712c109e0dbc8fba8b8d1:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/neon
 * [new ref]         208ea5f047454c28933712c109e0dbc8fba8b8d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 208ea5f bump release for test build