$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtdatavis3d.git /var/lib/mock/f40-build-800407-143529/root/chroot_tmpdir/scmroot/qt5-qtdatavis3d
Cloning into '/var/lib/mock/f40-build-800407-143529/root/chroot_tmpdir/scmroot/qt5-qtdatavis3d'...
$ git fetch origin ce93f8296731c34fd663fd8139bdc26191a2686f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtdatavis3d
 * [new ref]         ce93f8296731c34fd663fd8139bdc26191a2686f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ce93f82 5.15.13