Struct FetchServices 

pub struct FetchServices<'a> {
    pub credentials: &'a mut dyn CredentialProvider,
    pub progress: &'a mut dyn ProgressSink,
    pub ref_hook: Option<&'a dyn ReferenceTransactionHook>,
}

Mutable seams used while fetching.

Fields

credentials: &'a mut dyn CredentialProvider

Credential source for authenticated transports.

progress: &'a mut dyn ProgressSink

Progress sink for prune notices.

ref_hook: Option<&'a dyn ReferenceTransactionHook>

reference-transaction hook handler fired when applying remote-tracking ref updates. None skips the hook (the historical behavior). The CLI supplies a runner so --atomic fetches honor a hook that aborts the transaction, matching git’s store_updated_refs.