$ git clone -n https://src.fedoraproject.org/rpms/fcitx5-qt.git /var/lib/mock/f40-build-1931884-25123/root/chroot_tmpdir/scmroot/fcitx5-qt
Cloning into '/var/lib/mock/f40-build-1931884-25123/root/chroot_tmpdir/scmroot/fcitx5-qt'...
$ git fetch origin b7dbad5f7aad1ea976f1798e909fa702139db420:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx5-qt
 * [new ref]         b7dbad5f7aad1ea976f1798e909fa702139db420 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b7dbad5 Rebuild (qt6)