$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtcharts.git /var/lib/mock/f38-build-side-42-init-devel-662388-26635/root/chroot_tmpdir/scmroot/qt6-qtcharts
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-662388-26635/root/chroot_tmpdir/scmroot/qt6-qtcharts'...
$ git fetch origin eaa5f2654eb4f6a296234d7cb262d49b613f20e6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtcharts
 * [new ref]         eaa5f2654eb4f6a296234d7cb262d49b613f20e6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eaa5f26 6.4.3