$ git clone -n https://src.fedoraproject.org/rpms/qt6-qttools.git /var/lib/mock/f39-build-1583648-38129/root/chroot_tmpdir/scmroot/qt6-qttools
Cloning into '/var/lib/mock/f39-build-1583648-38129/root/chroot_tmpdir/scmroot/qt6-qttools'...
$ git fetch origin dca6e81d51bce0ee66def988511a832609b18dc3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qttools
 * [new ref]         dca6e81d51bce0ee66def988511a832609b18dc3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dca6e81 6.6.0