Function show_at

crates/flowtrace-cli/src/git.rs:420–422

Return the bytes of `rel_path` as it existed at commit `sha`. Errors if the commit or path does not exist in that tree.

(root: &Path, sha: &str, rel_path: &str)

/// Return the bytes of `rel_path` as it existed at commit `sha`. Errors if
/// the commit or path does not exist in that tree.
pub fn show_at(root: &Path, sha: &str, rel_path: &str) -> Result<Vec<u8>> {
    show_at_with_blob_sha(root, sha, rel_path).map(|(_, bytes)| bytes)
}

/// Same as [`show_at`] but also returns the blob's OID as a 40-char hex sha.
/// Callers can use this as an ETag: blob content is content-addressed in git,