Junio C Hamano  committed 09116a1

refs: loosen over-strict "format" check

The add_extra_ref() interface is used to add an extra-ref that is _not_
our ref for the purpose of helping auto-following of tags and reducing
object transfer from remote repository, and they are typically formatted
as a tagname followed by ^{} to make sure no valid refs match that
pattern. In other words, these entries are deliberately formatted not to
pass check-refname-format test.

A recent series however added a test unconditionally to the add_ref()
function that is called from add_extra_ref(). The check may be sensible
for other two callsites of the add_ref() interface, but definitely is
a wrong thing to do in add_extra_ref(). Disable it.

Signed-off-by: Junio C Hamano <>
Acked-by: Michael Haggerty <>

  • Participants
  • Parent commits 5e1e6b9
  • Branches master

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Files changed (2)

 static void add_ref(const char *name, const unsigned char *sha1,
-		    int flag, struct ref_array *refs,
+		    int flag, int check_name, struct ref_array *refs,
 		    struct ref_entry **new_entry)
 	int len;
 	entry = xmalloc(sizeof(struct ref_entry) + len);
 	hashcpy(entry->sha1, sha1);
-	if (check_refname_format(name, REFNAME_ALLOW_ONELEVEL|REFNAME_DOT_COMPONENT))
+	if (check_name &&
+	    check_refname_format(name, REFNAME_ALLOW_ONELEVEL|REFNAME_DOT_COMPONENT))
 		die("Reference has invalid format: '%s'", name);
 	memcpy(entry->name, name, len);
 	entry->flag = flag;
 		name = parse_ref_line(refline, sha1);
 		if (name) {
-			add_ref(name, sha1, flag, array, &last);
+			add_ref(name, sha1, flag, 1, array, &last);
 		if (last &&
 void add_extra_ref(const char *name, const unsigned char *sha1, int flag)
-	add_ref(name, sha1, flag, &extra_refs, NULL);
+	add_ref(name, sha1, flag, 0, &extra_refs, NULL);
 void clear_extra_refs(void)
 					flag |= REF_ISBROKEN;
-			} else
-				if (!resolve_ref(ref, sha1, 1, &flag)) {
-					hashclr(sha1);
-					flag |= REF_ISBROKEN;
-				}
-			add_ref(ref, sha1, flag, array, NULL);
+			} else if (!resolve_ref(ref, sha1, 1, &flag)) {
+				hashclr(sha1);
+				flag |= REF_ISBROKEN;
+			}
+			add_ref(ref, sha1, flag, 1, array, NULL);

File t/

 cd "$base_dir"
+test_expect_success 'clone with reference from a tagged repository' '
+	(
+		cd A && git tag -a -m 'tagged' HEAD
+	) &&
+	git clone --reference=A A I