update-cache.sh

#!/bin/bash
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if ! git config --get alias.update-cache > /dev/null; then
  printf '\e[36m%s\n\n  %s\n\e[0m\n' \
    'Hint: you can create a Git alias to execute this script. Example:' \
    "git config alias.update-cache '!bash $(realpath "$0")'"
fi

key="$(
  gh cache list \
    --key 'gradle-home-v1|Linux-X64|test' \
    --sort 'created_at' \
    --limit 1 \
    --json 'key' \
    --jq '.[].key'
)"

sha="$(cut -d '-' -f 5 <<< "$key")"

if ! git show "$sha" &> /dev/null; then
  printf '\e[33m%s\n%s\e[0m\n' \
  "Cannot update 'trunk-cached' because SHA $sha" \
  "does not exist locally. Please update your remote and try again."
else
  if git branch -f trunk-cached "$sha" &> /dev/null; then
    rel_date="$(git show --no-patch $sha --date=relative --pretty=format:'%cr')"
    printf '%s\n' "Local branch 'trunk-cached' successfully updated to $(head -c 10 <<< "$sha") (from $rel_date)."
  else
    printf '\e[31m%s\e[0m\n' "Failed to update ref for 'trunk-cached' and commit $(head -c 10 <<< "$sha")."
  fi
fi