$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtcharts.git /var/lib/mock/f40-build-2596188-62761/root/chroot_tmpdir/scmroot/qt6-qtcharts
Cloning into '/var/lib/mock/f40-build-2596188-62761/root/chroot_tmpdir/scmroot/qt6-qtcharts'...
$ git fetch origin 2f078cc06a37b9ced47ca55346e69f3287d3e68c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtcharts
 * [new ref]         2f078cc06a37b9ced47ca55346e69f3287d3e68c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f078cc 6.6.2