$ git clone -n https://src.fedoraproject.org/rpms/fcitx5-rime.git /var/lib/mock/f40-build-1931902-25123/root/chroot_tmpdir/scmroot/fcitx5-rime
Cloning into '/var/lib/mock/f40-build-1931902-25123/root/chroot_tmpdir/scmroot/fcitx5-rime'...
$ git fetch origin 68d0c26d62c617a9fce86d0a8a1e690841d15b66:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx5-rime
 * [new ref]         68d0c26d62c617a9fce86d0a8a1e690841d15b66 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68d0c26 update to upstream release 5.1.8