Sort by updated time of 'refs/heads/' in 'repository' when querying GraphQL API

[KimDaeIl]

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Is there any way to sort by updated time when requesting 'refs/heads/' of 'repository'?
Is it possible to sort by time updated by attribute like committed Date like TAG_COMMIT_DATE applied to 'refs/tags'?

user(login: $owner) {
repository(name: $repository) {
id
name
pushedAt
refs(
refPrefix: "refs/heads/"
first: 1
orderBy: {field: ALPHABETICAL, direction: ASC}
) {
// data
}
}
}