$ git clone -n https://src.fedoraproject.org/rpms/ddccontrol-db.git /var/lib/mock/f39-build-1458013-33031/root/chroot_tmpdir/scmroot/ddccontrol-db
Cloning into '/var/lib/mock/f39-build-1458013-33031/root/chroot_tmpdir/scmroot/ddccontrol-db'...
$ git fetch origin f40259f7ea7deb5d8cb6b212118c3306343d9966:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ddccontrol-db
 * [new ref]         f40259f7ea7deb5d8cb6b212118c3306343d9966 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f40259f New version