$ git clone -n https://src.fedoraproject.org/rpms/libqb.git /var/lib/mock/f39-build-1470026-33875/root/chroot_tmpdir/scmroot/libqb
Cloning into '/var/lib/mock/f39-build-1470026-33875/root/chroot_tmpdir/scmroot/libqb'...
$ git fetch origin d9e4cdba02e7c7367fcdc43f884a465183801568:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libqb
 * [new ref]         d9e4cdba02e7c7367fcdc43f884a465183801568 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d9e4cdb Rebase to 2.0.8