local local_ref="$1"

local local_sha="$2"

local remote_ref="$3"

local remote_sha="$4"

local branch_name=""

local base_ref=""

[[ "$local_ref" == refs/heads/* ]] || return 1

[[ "$local_sha" != "$zero_sha" ]] || return 1

if [[ "$remote_sha" != "$zero_sha" ]] && git cat-file -e "${remote_sha}^{commit}" 2>/dev/null; then

base_ref="$remote_sha"

elif [[ "$remote_ref" == refs/heads/* ]]; then

branch_name="${remote_ref#refs/heads/}"

if git rev-parse --verify "refs/remotes/$remote_name/$branch_name" >/dev/null 2>&1; then

base_ref="refs/remotes/$remote_name/$branch_name"

fi

fi

if [[ -z "$base_ref" ]] && git rev-parse --verify "refs/remotes/$remote_name/main" >/dev/null 2>&1; then

base_ref="$(git merge-base "$local_sha" "refs/remotes/$remote_name/main" 2>/dev/null || true)"

fi

if [[ -n "$base_ref" ]]; then

git diff --quiet "$base_ref...$local_sha" -- vendor.lock.toml

return $?

fi

# Fallback for brand-new remotes/branches with no useful remote base yet.

git diff-tree --quiet --no-commit-id -r "$local_sha" -- vendor.lock.toml