diff mbox series

[v2,6/6] update-ref: add support for 'symref-update' command

Message ID 20240522090326.1268326-7-knayak@gitlab.com (mailing list archive)
State Superseded
Headers show
Series update-ref: add symref support for --stdin | expand

Commit Message

karthik nayak May 22, 2024, 9:03 a.m. UTC 
From: Karthik Nayak <karthik.188@gmail.com>

Add 'symref-update' command to the '--stdin' mode of 'git-update-ref' to
allow updates of symbolic refs. The 'symref-update' command takes in a
<new-target>, which the <ref> will be updated to. If the <ref> doesn't
exist it will be created.

It also optionally takes either an `ref <old-target>` or `oid
<old-oid>`. If the <old-target> is provided, it checks to see if the
<ref> targets the <old-target> before the update. If <old-oid> is provided
it checks <ref> to ensure that it is a regular ref and <old-oid> is the
OID before the update. This by extension also means that this when a
zero <old-oid> is provided, it ensures that the ref didn't exist before.

The divergence in syntax from the regular `update` command is because if
we don't use a `(ref | oid)` prefix for the old_value, then there is
ambiguity around if the value provided should be treated as an oid or a
reference. This is more so the reason, because we allow anything
committish to be provided as an oid.

The command allows users to perform symbolic ref updates within a
transaction. This provides atomicity and allows users to perform a set
of operations together.

This command supports deref mode, to ensure that we can update
dereferenced regular refs to symrefs.

Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
---
 Documentation/git-update-ref.txt |   7 ++
 builtin/update-ref.c             |  90 ++++++++++++++
 t/t1400-update-ref.sh            | 203 +++++++++++++++++++++++++++++++
 t/t1416-ref-transaction-hooks.sh |   4 +
 4 files changed, 304 insertions(+)

Comments

Junio C Hamano May 25, 2024, 11 p.m. UTC | #1 
Karthik Nayak <karthik.188@gmail.com> writes:

> +static void parse_cmd_symref_update(struct ref_transaction *transaction,
> +				    const char *next, const char *end)
> +{
> +	char *refname, *new_target, *old_arg;
> +	char *old_target = NULL;
> + ...
> +	old_arg = parse_next_arg(&next);

> +	if (old_arg) {
> +		old_target = parse_next_arg(&next);

Now we have an allocated memory we are responsible for freeing in
old_target, obtained from parse_next_arg() ...

> +		if (!old_target)
> +			die("symref-update %s: expected old value", refname);

... and here we know it is not NULL.  We use it to grab the object
name ...

> +		if (!strcmp(old_arg, "oid")) {
> +			if (repo_get_oid(the_repository, old_target, &old_oid))
> +				die("symref-update %s: invalid oid: %s", refname, old_target);
> +
> +			old_target = NULL;

... and then we overwritten the variable, losing the last reference
to the piece of memory without freeing.

Perhaps squashing this in is sufficient to plug this leak, but there
probably are other new leaks around this code.  I ran out of time so
I'll let you take care of the rest ;-)

Thanks.

 builtin/update-ref.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git c/builtin/update-ref.c w/builtin/update-ref.c
index 76d20ca0f1..7d2a419230 100644
--- c/builtin/update-ref.c
+++ w/builtin/update-ref.c
@@ -297,7 +297,7 @@ static void parse_cmd_symref_update(struct ref_transaction *transaction,
 
 		if (!strcmp(old_arg, "oid") &&
 		    !repo_get_oid(the_repository, old_target, &old_oid)) {
-			old_target = NULL;
+			FREE_AND_NULL(old_target);
 			have_old = 1;
 		} else if (strcmp(old_arg, "ref"))
 			die("symref-update %s: invalid arg '%s' for old value", refname, old_arg);
karthik nayak May 29, 2024, 8:29 a.m. UTC | #2 
Junio C Hamano <gitster@pobox.com> writes:

> Karthik Nayak <karthik.188@gmail.com> writes:
>
>> +static void parse_cmd_symref_update(struct ref_transaction *transaction,
>> +				    const char *next, const char *end)
>> +{
>> +	char *refname, *new_target, *old_arg;
>> +	char *old_target = NULL;
>> + ...
>> +	old_arg = parse_next_arg(&next);
>
>> +	if (old_arg) {
>> +		old_target = parse_next_arg(&next);
>
> Now we have an allocated memory we are responsible for freeing in
> old_target, obtained from parse_next_arg() ...
>
>> +		if (!old_target)
>> +			die("symref-update %s: expected old value", refname);
>
> ... and here we know it is not NULL.  We use it to grab the object
> name ...
>
>> +		if (!strcmp(old_arg, "oid")) {
>> +			if (repo_get_oid(the_repository, old_target, &old_oid))
>> +				die("symref-update %s: invalid oid: %s", refname, old_target);
>> +
>> +			old_target = NULL;
>
> ... and then we overwritten the variable, losing the last reference
> to the piece of memory without freeing.
>
> Perhaps squashing this in is sufficient to plug this leak, but there
> probably are other new leaks around this code.  I ran out of time so
> I'll let you take care of the rest ;-)
>

Yeah this indeed was missed, I think having the
`TEST_PASSES_SANITIZE_LEAK` flag set, helped catch this leak and another
around strbuf.

> Thanks.
>
>  builtin/update-ref.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git c/builtin/update-ref.c w/builtin/update-ref.c
> index 76d20ca0f1..7d2a419230 100644
> --- c/builtin/update-ref.c
> +++ w/builtin/update-ref.c
> @@ -297,7 +297,7 @@ static void parse_cmd_symref_update(struct ref_transaction *transaction,
>
>  		if (!strcmp(old_arg, "oid") &&
>  		    !repo_get_oid(the_repository, old_target, &old_oid)) {
> -			old_target = NULL;
> +			FREE_AND_NULL(old_target);
>  			have_old = 1;
>  		} else if (strcmp(old_arg, "ref"))
>  			die("symref-update %s: invalid arg '%s' for old value", refname, old_arg);

This definitely works, but keeping it consistent with the rest of the
code in this file, I think we can do:

diff --git a/builtin/update-ref.c b/builtin/update-ref.c
index bda37c161d..82f461d6f8 100644
--- a/builtin/update-ref.c
+++ b/builtin/update-ref.c
@@ -298,7 +300,6 @@ static void parse_cmd_symref_update(struct
ref_transaction *transaction,
 			if (repo_get_oid(the_repository, old_target, &old_oid))
 				die("symref-update %s: invalid oid: %s", refname, old_target);

-			old_target = NULL;
 			have_old_oid = 1;
 		} else if (!strcmp(old_arg, "ref")) {
 			if (check_refname_format(old_target, REFNAME_ALLOW_ONELEVEL))
@@ -313,7 +314,8 @@ static void parse_cmd_symref_update(struct
ref_transaction *transaction,

 	if (ref_transaction_update(transaction, refname, NULL,
 				   have_old_oid ? &old_oid : NULL,
-				   new_target, old_target,
+				   new_target,
+				   have_old_oid ? NULL : old_target,
 				   update_flags | create_reflog_flag,
 				   msg, &err))
 		die("%s", err.buf);

This works, since we anyways do a `free(old_target)` at the end of this
function.
diff mbox series

Patch

diff --git a/Documentation/git-update-ref.txt b/Documentation/git-update-ref.txt
index 364ef78af1..afcf33cf60 100644
--- a/Documentation/git-update-ref.txt
+++ b/Documentation/git-update-ref.txt
@@ -65,6 +65,7 @@  performs all modifications together.  Specify commands of the form:
 	create SP <ref> SP <new-oid> LF
 	delete SP <ref> [SP <old-oid>] LF
 	verify SP <ref> [SP <old-oid>] LF
+	symref-update SP <ref> SP <new-target> [SP (ref SP <old-target> | oid SP <old-oid>)] LF
 	symref-create SP <ref> SP <new-target> LF
 	symref-delete SP <ref> [SP <old-target>] LF
 	symref-verify SP <ref> [SP <old-target>] LF
@@ -89,6 +90,7 @@  quoting:
 	create SP <ref> NUL <new-oid> NUL
 	delete SP <ref> NUL [<old-oid>] NUL
 	verify SP <ref> NUL [<old-oid>] NUL
+	symref-update SP <ref> NUL <new-target> [NUL (ref NUL <old-target> | oid NUL <old-oid>)] NUL
 	symref-create SP <ref> NUL <new-target> NUL
 	symref-delete SP <ref> [NUL <old-target>] NUL
 	symref-verify SP <ref> [NUL <old-target>] NUL
@@ -119,6 +121,11 @@  delete::
 	Delete <ref> after verifying it exists with <old-oid>, if
 	given.  If given, <old-oid> may not be zero.
 
+symref-update::
+	Set <ref> to <new-target> after verifying <old-target> or <old-oid>,
+	if given. Specify a zero <old-oid> to ensure that the ref does not
+	exist before the update.
+
 verify::
 	Verify <ref> against <old-oid> but do not change it.  If
 	<old-oid> is zero or missing, the ref must not exist.
diff --git a/builtin/update-ref.c b/builtin/update-ref.c
index 16d184603b..bda37c161d 100644
--- a/builtin/update-ref.c
+++ b/builtin/update-ref.c
@@ -98,6 +98,40 @@  static char *parse_next_refname(const char **next)
 	return parse_refname(next);
 }
 
+/*
+ * Wrapper around parse_arg which skips the next delimiter.
+ */
+static char *parse_next_arg(const char **next)
+{
+	struct strbuf arg = STRBUF_INIT;
+
+	if (line_termination) {
+		/* Without -z, consume SP and use next argument */
+		if (!**next || **next == line_termination)
+			return NULL;
+		if (**next != ' ')
+			die("expected SP but got: %s", *next);
+	} else {
+		/* With -z, read the next NUL-terminated line */
+		if (**next)
+			return NULL;
+	}
+	/* Skip the delimiter */
+	(*next)++;
+
+	if (line_termination) {
+		/* Without -z, use the next argument */
+		*next = parse_arg(*next, &arg);
+	} else {
+		/* With -z, use everything up to the next NUL */
+		strbuf_addstr(&arg, *next);
+		*next += arg.len;
+	}
+
+	if (arg.len)
+		return strbuf_detach(&arg, NULL);
+	return NULL;
+}
 
 /*
  * The value being parsed is <old-oid> (as opposed to <new-oid>; the
@@ -237,6 +271,61 @@  static void parse_cmd_update(struct ref_transaction *transaction,
 	strbuf_release(&err);
 }
 
+static void parse_cmd_symref_update(struct ref_transaction *transaction,
+				    const char *next, const char *end)
+{
+	char *refname, *new_target, *old_arg;
+	char *old_target = NULL;
+	struct strbuf err = STRBUF_INIT;
+	struct object_id old_oid;
+	int have_old_oid = 0;
+
+	refname = parse_refname(&next);
+	if (!refname)
+		die("symref-update: missing <ref>");
+
+	new_target = parse_next_refname(&next);
+	if (!new_target)
+		die("symref-update %s: missing <new-target>", refname);
+
+	old_arg = parse_next_arg(&next);
+	if (old_arg) {
+		old_target = parse_next_arg(&next);
+		if (!old_target)
+			die("symref-update %s: expected old value", refname);
+
+		if (!strcmp(old_arg, "oid")) {
+			if (repo_get_oid(the_repository, old_target, &old_oid))
+				die("symref-update %s: invalid oid: %s", refname, old_target);
+
+			old_target = NULL;
+			have_old_oid = 1;
+		} else if (!strcmp(old_arg, "ref")) {
+			if (check_refname_format(old_target, REFNAME_ALLOW_ONELEVEL))
+				die("symref-update %s: invalid ref: %s", refname, old_target);
+		} else {
+			die("symref-update %s: invalid arg '%s' for old value", refname, old_arg);
+		}
+	}
+
+	if (*next != line_termination)
+		die("symref-update %s: extra input: %s", refname, next);
+
+	if (ref_transaction_update(transaction, refname, NULL,
+				   have_old_oid ? &old_oid : NULL,
+				   new_target, old_target,
+				   update_flags | create_reflog_flag,
+				   msg, &err))
+		die("%s", err.buf);
+
+	update_flags = default_flags;
+	free(refname);
+	free(old_arg);
+	free(old_target);
+	free(new_target);
+	strbuf_release(&err);
+}
+
 static void parse_cmd_create(struct ref_transaction *transaction,
 			     const char *next, const char *end)
 {
@@ -502,6 +591,7 @@  static const struct parse_cmd {
 	{ "create",        parse_cmd_create,        2, UPDATE_REFS_OPEN },
 	{ "delete",        parse_cmd_delete,        2, UPDATE_REFS_OPEN },
 	{ "verify",        parse_cmd_verify,        2, UPDATE_REFS_OPEN },
+	{ "symref-update", parse_cmd_symref_update, 4, UPDATE_REFS_OPEN },
 	{ "symref-create", parse_cmd_symref_create, 2, UPDATE_REFS_OPEN },
 	{ "symref-delete", parse_cmd_symref_delete, 2, UPDATE_REFS_OPEN },
 	{ "symref-verify", parse_cmd_symref_verify, 2, UPDATE_REFS_OPEN },
diff --git a/t/t1400-update-ref.sh b/t/t1400-update-ref.sh
index 78001f879a..68afe7c228 100755
--- a/t/t1400-update-ref.sh
+++ b/t/t1400-update-ref.sh
@@ -1360,6 +1360,7 @@  test_expect_success 'fails with duplicate HEAD update' '
 '
 
 test_expect_success 'fails with duplicate ref update via symref' '
+	test_when_finished "git symbolic-ref -d refs/heads/symref2" &&
 	git branch target2 $A &&
 	git symbolic-ref refs/heads/symref2 refs/heads/target2 &&
 	cat >stdin <<-EOF &&
@@ -1848,6 +1849,208 @@  do
 		git reflog exists refs/heads/symref
 	'
 
+	test_expect_success "stdin $type symref-update fails with too many arguments" '
+		format_command $type "symref-update refs/heads/symref" "$a" "ref" "$a" "$a" >stdin &&
+		test_must_fail git update-ref --stdin $type --no-deref <stdin 2>err &&
+		if test "$type" = "-z"
+		then
+			grep "fatal: unknown command: $a" err
+		else
+			grep "fatal: symref-update refs/heads/symref: extra input:  $a" err
+		fi
+	'
+
+	test_expect_success "stdin $type symref-update fails with wrong old value argument" '
+		format_command $type "symref-update refs/heads/symref" "$a" "foo" "$a" "$a" >stdin &&
+		test_must_fail git update-ref --stdin $type --no-deref <stdin 2>err &&
+		grep "fatal: symref-update refs/heads/symref: invalid arg ${SQ}foo${SQ} for old value" err
+	'
+
+	test_expect_success "stdin $type symref-update creates with zero old value" '
+		test_when_finished "git symbolic-ref -d refs/heads/symref" &&
+		format_command $type "symref-update refs/heads/symref" "$a" "oid" "$Z" >stdin &&
+		git update-ref --stdin $type --no-deref <stdin &&
+		echo $a >expect &&
+		git symbolic-ref refs/heads/symref >actual &&
+		test_cmp expect actual
+	'
+
+	test_expect_success "stdin $type symref-update creates with no old value" '
+		test_when_finished "git symbolic-ref -d refs/heads/symref" &&
+		format_command $type "symref-update refs/heads/symref" "$a" >stdin &&
+		git update-ref --stdin $type --no-deref <stdin &&
+		echo $a >expect &&
+		git symbolic-ref refs/heads/symref >actual &&
+		test_cmp expect actual
+	'
+
+	test_expect_success "stdin $type symref-update creates dangling" '
+		test_when_finished "git symbolic-ref -d refs/heads/symref" &&
+		test_must_fail git rev-parse refs/heads/nonexistent &&
+		format_command $type "symref-update refs/heads/symref" "refs/heads/nonexistent" >stdin &&
+		git update-ref --stdin $type --no-deref <stdin &&
+		echo refs/heads/nonexistent >expect &&
+		git symbolic-ref refs/heads/symref >actual &&
+		test_cmp expect actual
+	'
+
+	test_expect_success "stdin $type symref-update fails with wrong old value" '
+		test_when_finished "git symbolic-ref -d refs/heads/symref" &&
+		git symbolic-ref refs/heads/symref $a &&
+		format_command $type "symref-update refs/heads/symref" "$m" "ref" "$b" >stdin &&
+		test_must_fail git update-ref --stdin $type --no-deref <stdin 2>err &&
+		grep "fatal: verifying symref target: ${SQ}refs/heads/symref${SQ}: is at $a but expected $b" err &&
+		test_must_fail git rev-parse --verify -q $c
+	'
+
+	test_expect_success "stdin $type symref-update updates dangling ref" '
+		test_when_finished "git symbolic-ref -d refs/heads/symref" &&
+		test_must_fail git rev-parse refs/heads/nonexistent &&
+		git symbolic-ref refs/heads/symref refs/heads/nonexistent &&
+		format_command $type "symref-update refs/heads/symref" "$a" >stdin &&
+		git update-ref --stdin $type --no-deref <stdin &&
+		echo $a >expect &&
+		git symbolic-ref refs/heads/symref >actual &&
+		test_cmp expect actual
+	'
+
+	test_expect_success "stdin $type symref-update updates dangling ref with old value" '
+		test_when_finished "git symbolic-ref -d refs/heads/symref" &&
+		test_must_fail git rev-parse refs/heads/nonexistent &&
+		git symbolic-ref refs/heads/symref refs/heads/nonexistent &&
+		format_command $type "symref-update refs/heads/symref" "$a" "ref" "refs/heads/nonexistent" >stdin &&
+		git update-ref --stdin $type --no-deref <stdin &&
+		echo $a >expect &&
+		git symbolic-ref refs/heads/symref >actual &&
+		test_cmp expect actual
+	'
+
+	test_expect_success "stdin $type symref-update fails update dangling ref with wrong old value" '
+		test_when_finished "git symbolic-ref -d refs/heads/symref" &&
+		test_must_fail git rev-parse refs/heads/nonexistent &&
+		git symbolic-ref refs/heads/symref refs/heads/nonexistent &&
+		format_command $type "symref-update refs/heads/symref" "$a" "ref" "refs/heads/wrongref" >stdin &&
+		test_must_fail git update-ref --stdin $type --no-deref <stdin &&
+		echo refs/heads/nonexistent >expect &&
+		git symbolic-ref refs/heads/symref >actual &&
+		test_cmp expect actual
+	'
+
+	test_expect_success "stdin $type symref-update works with right old value" '
+		test_when_finished "git symbolic-ref -d refs/heads/symref" &&
+		git symbolic-ref refs/heads/symref $a &&
+		format_command $type "symref-update refs/heads/symref" "$m" "ref" "$a" >stdin &&
+		git update-ref --stdin $type --no-deref <stdin &&
+		echo $m >expect &&
+		git symbolic-ref refs/heads/symref >actual &&
+		test_cmp expect actual
+	'
+
+	test_expect_success "stdin $type symref-update works with no old value" '
+		test_when_finished "git symbolic-ref -d refs/heads/symref" &&
+		git symbolic-ref refs/heads/symref $a &&
+		format_command $type "symref-update refs/heads/symref" "$m" >stdin &&
+		git update-ref --stdin $type --no-deref <stdin &&
+		echo $m >expect &&
+		git symbolic-ref refs/heads/symref >actual &&
+		test_cmp expect actual
+	'
+
+	test_expect_success "stdin $type symref-update fails with empty old ref-target" '
+		test_when_finished "git symbolic-ref -d refs/heads/symref" &&
+		git symbolic-ref refs/heads/symref $a &&
+		format_command $type "symref-update refs/heads/symref" "$m" "ref" "" >stdin &&
+		test_must_fail git update-ref --stdin $type --no-deref <stdin &&
+		echo $a >expect &&
+		git symbolic-ref refs/heads/symref >actual &&
+		test_cmp expect actual
+	'
+
+	test_expect_success "stdin $type symref-update creates (with deref)" '
+		test_when_finished "git symbolic-ref -d refs/heads/symref" &&
+		format_command $type "symref-update refs/heads/symref" "$a" >stdin &&
+		git update-ref --stdin $type <stdin &&
+		echo $a >expect &&
+		git symbolic-ref --no-recurse refs/heads/symref >actual &&
+		test_cmp expect actual &&
+		test-tool ref-store main for-each-reflog-ent refs/heads/symref >actual &&
+		grep "$Z $(git rev-parse $a)" actual
+	'
+
+	test_expect_success "stdin $type symref-update regular ref to symref with correct old-oid" '
+		test_when_finished "git symbolic-ref -d --no-recurse refs/heads/regularref" &&
+		git update-ref --no-deref refs/heads/regularref $a &&
+		format_command $type "symref-update refs/heads/regularref" "$a" "oid" "$(git rev-parse $a)" >stdin &&
+		git update-ref --stdin $type <stdin &&
+		echo $a >expect &&
+		git symbolic-ref --no-recurse refs/heads/regularref >actual &&
+		test_cmp expect actual &&
+		test-tool ref-store main for-each-reflog-ent refs/heads/regularref >actual &&
+		grep "$(git rev-parse $a) $(git rev-parse $a)" actual
+	'
+
+	test_expect_success "stdin $type symref-update regular ref to symref fails with wrong old-oid" '
+		test_when_finished "git update-ref -d refs/heads/regularref" &&
+		git update-ref --no-deref refs/heads/regularref $a &&
+		format_command $type "symref-update refs/heads/regularref" "$a" "oid" "$(git rev-parse refs/heads/target2)" >stdin &&
+		test_must_fail git update-ref --stdin $type <stdin 2>err &&
+		grep "fatal: cannot lock ref ${SQ}refs/heads/regularref${SQ}: is at $(git rev-parse $a) but expected $(git rev-parse refs/heads/target2)" err &&
+		echo $(git rev-parse $a) >expect &&
+		git rev-parse refs/heads/regularref >actual &&
+		test_cmp expect actual
+	'
+
+	test_expect_success "stdin $type symref-update regular ref to symref fails with invalid old-oid" '
+		test_when_finished "git update-ref -d refs/heads/regularref" &&
+		git update-ref --no-deref refs/heads/regularref $a &&
+		format_command $type "symref-update refs/heads/regularref" "$a" "oid" "not-a-ref-oid" >stdin &&
+		test_must_fail git update-ref --stdin $type <stdin 2>err &&
+		grep "fatal: symref-update refs/heads/regularref: invalid oid: not-a-ref-oid" err &&
+		echo $(git rev-parse $a) >expect &&
+		git rev-parse refs/heads/regularref >actual &&
+		test_cmp expect actual
+	'
+
+	test_expect_success "stdin $type symref-update existing symref with zero old-oid" '
+		test_when_finished "git symbolic-ref -d --no-recurse refs/heads/symref" &&
+		git symbolic-ref refs/heads/symref refs/heads/target2 &&
+		format_command $type "symref-update refs/heads/symref" "$a" "oid" "$Z" >stdin &&
+		test_must_fail git update-ref --stdin $type <stdin 2>err &&
+		grep "fatal: cannot lock ref ${SQ}refs/heads/symref${SQ}: reference already exists" err &&
+		echo refs/heads/target2 >expect &&
+		git symbolic-ref refs/heads/symref >actual &&
+		test_cmp expect actual
+	'
+
+	test_expect_success "stdin $type symref-update regular ref to symref (with deref)" '
+		test_when_finished "git symbolic-ref -d refs/heads/symref" &&
+		test_when_finished "git update-ref -d --no-deref refs/heads/symref2" &&
+		git update-ref refs/heads/symref2 $a &&
+		git symbolic-ref --no-recurse refs/heads/symref refs/heads/symref2 &&
+		format_command $type "symref-update refs/heads/symref" "$a" >stdin &&
+		git update-ref $type --stdin <stdin &&
+		echo $a >expect &&
+		git symbolic-ref --no-recurse refs/heads/symref2 >actual &&
+		test_cmp expect actual &&
+		echo refs/heads/symref2 >expect &&
+		git symbolic-ref --no-recurse refs/heads/symref >actual &&
+		test_cmp expect actual &&
+		test-tool ref-store main for-each-reflog-ent refs/heads/symref >actual &&
+		grep "$(git rev-parse $a) $(git rev-parse $a)" actual
+	'
+
+	test_expect_success "stdin $type symref-update regular ref to symref" '
+		test_when_finished "git symbolic-ref -d --no-recurse refs/heads/regularref" &&
+		git update-ref --no-deref refs/heads/regularref $a &&
+		format_command $type "symref-update refs/heads/regularref" "$a" >stdin &&
+		git update-ref $type --stdin <stdin &&
+		echo $a >expect &&
+		git symbolic-ref --no-recurse refs/heads/regularref >actual &&
+		test_cmp expect actual &&
+		test-tool ref-store main for-each-reflog-ent refs/heads/regularref >actual &&
+		grep "$(git rev-parse $a) $(git rev-parse $a)" actual
+	'
+
 done
 
 test_done
diff --git a/t/t1416-ref-transaction-hooks.sh b/t/t1416-ref-transaction-hooks.sh
index ff77dcca6b..5a812ca3c0 100755
--- a/t/t1416-ref-transaction-hooks.sh
+++ b/t/t1416-ref-transaction-hooks.sh
@@ -163,6 +163,7 @@  test_expect_success 'hook gets all queued symref updates' '
 	git update-ref refs/heads/branch $POST_OID &&
 	git symbolic-ref refs/heads/symref refs/heads/main &&
 	git symbolic-ref refs/heads/symrefd refs/heads/main &&
+	git symbolic-ref refs/heads/symrefu refs/heads/main &&
 
 	test_hook reference-transaction <<-\EOF &&
 	echo "$*" >>actual
@@ -190,10 +191,12 @@  test_expect_success 'hook gets all queued symref updates' '
 	ref:refs/heads/main $ZERO_OID refs/heads/symref
 	ref:refs/heads/main $ZERO_OID refs/heads/symrefd
 	$ZERO_OID ref:refs/heads/main refs/heads/symrefc
+	ref:refs/heads/main ref:refs/heads/branch refs/heads/symrefu
 	committed
 	ref:refs/heads/main $ZERO_OID refs/heads/symref
 	ref:refs/heads/main $ZERO_OID refs/heads/symrefd
 	$ZERO_OID ref:refs/heads/main refs/heads/symrefc
+	ref:refs/heads/main ref:refs/heads/branch refs/heads/symrefu
 	EOF
 
 	git update-ref --no-deref --stdin <<-EOF &&
@@ -201,6 +204,7 @@  test_expect_success 'hook gets all queued symref updates' '
 	symref-verify refs/heads/symref refs/heads/main
 	symref-delete refs/heads/symrefd refs/heads/main
 	symref-create refs/heads/symrefc refs/heads/main
+	symref-update refs/heads/symrefu refs/heads/branch ref refs/heads/main
 	prepare
 	commit
 	EOF