$ git clone -n https://src.fedoraproject.org/rpms/qt6-qt3d.git /var/lib/mock/f40-build-2031389-47619/root/chroot_tmpdir/scmroot/qt6-qt3d
Cloning into '/var/lib/mock/f40-build-2031389-47619/root/chroot_tmpdir/scmroot/qt6-qt3d'...
$ git fetch origin d25d6dc0e93a0f503f1bfa0509479398cb107b25:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qt3d
 * [new ref]         d25d6dc0e93a0f503f1bfa0509479398cb107b25 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d25d6dc 6.6.1