$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtquick3d.git /var/lib/mock/f40-build-786439-134291/root/chroot_tmpdir/scmroot/qt6-qtquick3d
Cloning into '/var/lib/mock/f40-build-786439-134291/root/chroot_tmpdir/scmroot/qt6-qtquick3d'...
$ git fetch origin cbf7fedd60af47a2cc01dacd02eed56982c83c9c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtquick3d
 * [new ref]         cbf7fedd60af47a2cc01dacd02eed56982c83c9c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cbf7fed 6.6.2