$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtgraphs.git /var/lib/mock/f40-build-787015-134638/root/chroot_tmpdir/scmroot/qt6-qtgraphs
Cloning into '/var/lib/mock/f40-build-787015-134638/root/chroot_tmpdir/scmroot/qt6-qtgraphs'...
$ git fetch origin 4d817705bc3a0a0944b2399bf675c22014782e4b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtgraphs
 * [new ref]         4d817705bc3a0a0944b2399bf675c22014782e4b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d81770 6.6.2