$ git clone -n https://src.fedoraproject.org/rpms/qt6.git /var/lib/mock/f40-build-1465747-23665/root/chroot_tmpdir/scmroot/qt6
Cloning into '/var/lib/mock/f40-build-1465747-23665/root/chroot_tmpdir/scmroot/qt6'...
$ git fetch origin ef9319d2c48171c3b00fcf8e8d87d5f306ef0e9b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6
 * [new ref]         ef9319d2c48171c3b00fcf8e8d87d5f306ef0e9b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef9319d 6.7.2