A simple fzf powered jujutsu command that shows some possible revsets.

fzf-jj

#!/bin/bash

# Define revsets and their descriptions
revsets=(
    "all()" "All commits of the repository"
    "::@" "Show all ancestors"
    "remote_bookmarks().." "Show all commits that are not in remote bookmarks"
    "mine()" "Commits authored by the current user"
)

# Prepare the input for fzf
fzf_input=""
for ((i = 0; i < ${#revsets[@]}; i += 2)); do
    fzf_input+="${revsets[i]}\t${revsets[i+1]}\n"
done

# Pipe revsets into fzf
selected_revset=$(echo -e "$fzf_input" \
        | fzf --height 40% --layout reverse --border --with-nth=1 --preview="echo {}" | awk -F'\t' '{print $1}')

# If a revset is selected, run `jj log` with it
if [[ -n "$selected_revset" ]]; then
    jj log -r "$selected_revset"
else
    echo "No revset selected."
    exit 1
fi

Motivation
I had trouble remembering revsets and wanted to collect powerful revsets.
Once jj util exec is launched this can be powered by jj directly via an alias like jj rlog