Download named GitHub asset by release name. Requires curl, jq and coreutils.

gh_asset.sh

#!/usr/bin/env bash
set -euo pipefail

: "${GH_TOKEN}"

repo="${1}"
version="${2}"
name="${3}"

asset_url="$(curl -s -H "Accept: application/vnd.github.v3+json" -u "token:${GH_TOKEN}" "https://api.github.com/repos/${repo}/releases/tags/${version}" \
        | jq --arg assetName "${name}" -r '.assets[] | select(.name == $assetName).url' \
        | head -1)"

if [ -z "${asset_url}" ]; then
        echo "Could not find asset '${name}' for release '${version}' in '${repo}'"
        exit 1
fi

curl -L -H "Accept: application/octet-stream" -u "token:${GH_TOKEN}" "${asset_url}"