$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtgraphs.git /var/lib/mock/f41-build-861454-169774/root/chroot_tmpdir/scmroot/qt6-qtgraphs
Cloning into '/var/lib/mock/f41-build-861454-169774/root/chroot_tmpdir/scmroot/qt6-qtgraphs'...
$ git fetch origin 84b522753c6fa05649a3fe9d8b3a353cf7ac78e0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtgraphs
 * [new ref]         84b522753c6fa05649a3fe9d8b3a353cf7ac78e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84b5227 6.8.0