1 files changed, 12 insertions, 0 deletions
diff --git a/chunk-format.c b/chunk-format.c
index 1c3dca62e2..0275b74a89 100644
--- a/chunk-format.c
+++ b/chunk-format.c
@@ -181,3 +181,15 @@ int read_chunk(struct chunkfile *cf,
 
 	return CHUNK_NOT_FOUND;
 }
+
+uint8_t oid_version(const struct git_hash_algo *algop)
+{
+	switch (hash_algo_by_ptr(algop)) {
+	case GIT_HASH_SHA1:
+		return 1;
+	case GIT_HASH_SHA256:
+		return 2;
+	default:
+		die(_("invalid hash version"));
+	}
+}