$ git clone -n https://github.com/xcp-ng-rpms/neon.git /var/lib/mock/v8.3-u-pcoval2-11172-29575/root/chroot_tmpdir/scmroot/neon
Cloning into '/var/lib/mock/v8.3-u-pcoval2-11172-29575/root/chroot_tmpdir/scmroot/neon'...
$ git fetch origin d905f932651ed3cf1ed754432240338b129b34b5:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/neon
 * [new ref]         d905f932651ed3cf1ed754432240338b129b34b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d905f93 bump release for test build