$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtmqtt.git /var/lib/mock/f45-build-34129-678/root/chroot_tmpdir/scmroot/qt6-qtmqtt
Cloning into '/var/lib/mock/f45-build-34129-678/root/chroot_tmpdir/scmroot/qt6-qtmqtt'...
$ git fetch origin ab455fdd4097f4710ee7d39bc4e2ea6497da5326:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtmqtt
 * [new ref]         ab455fdd4097f4710ee7d39bc4e2ea6497da5326 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab455fd 6.11.2