$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtdatavis3d.git /var/lib/mock/f41-build-847169-163786/root/chroot_tmpdir/scmroot/qt5-qtdatavis3d
Cloning into '/var/lib/mock/f41-build-847169-163786/root/chroot_tmpdir/scmroot/qt5-qtdatavis3d'...
$ git fetch origin 208e6bcbe21b070173a997e2c8dea7662d17aa68:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtdatavis3d
 * [new ref]         208e6bcbe21b070173a997e2c8dea7662d17aa68 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 208e6bc 5.15.15