$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtwayland.git /var/lib/mock/f40-build-2142938-50851/root/chroot_tmpdir/scmroot/qt6-qtwayland
Cloning into '/var/lib/mock/f40-build-2142938-50851/root/chroot_tmpdir/scmroot/qt6-qtwayland'...
$ git fetch origin 4c476b92359aa3e427fd1c3deac2b67a8421b8a0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtwayland
 * [new ref]         4c476b92359aa3e427fd1c3deac2b67a8421b8a0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c476b9 6.6.1