$ git clone -n https://src.fedoraproject.org/rpms/qt5-qt3d.git /var/lib/mock/f41-build-847224-163849/root/chroot_tmpdir/scmroot/qt5-qt3d
Cloning into '/var/lib/mock/f41-build-847224-163849/root/chroot_tmpdir/scmroot/qt5-qt3d'...
$ git fetch origin 809223d7ab3950134008c7db4be94cd878082f8c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qt3d
 * [new ref]         809223d7ab3950134008c7db4be94cd878082f8c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 809223d 5.15.15