$ git clone -n https://src.fedoraproject.org/rpms/fcitx5-kkc.git /var/lib/mock/f39-build-2205167-51990/root/chroot_tmpdir/scmroot/fcitx5-kkc
Cloning into '/var/lib/mock/f39-build-2205167-51990/root/chroot_tmpdir/scmroot/fcitx5-kkc'...
$ git fetch origin 1f358eecd635938831c7d346f3d3bb8f4e5b816f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx5-kkc
 * [new ref]         1f358eecd635938831c7d346f3d3bb8f4e5b816f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1f358ee update to upstream release 5.1.1