$ git clone -n https://src.fedoraproject.org/rpms/qt5-qttools.git /var/lib/mock/f45-build-34073-677/root/chroot_tmpdir/scmroot/qt5-qttools
Cloning into '/var/lib/mock/f45-build-34073-677/root/chroot_tmpdir/scmroot/qt5-qttools'...
$ git fetch origin 775e2edfb4850d5cc6e8a6b180d99df37eb5cc46:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qttools
 * [new ref]         775e2edfb4850d5cc6e8a6b180d99df37eb5cc46 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 775e2ed Fix rhbz#2501765, qtdiag crash