From: Derrick Stolee <redacted>

If a remote has the skipFetchAll setting enabled, then that remote is
not intended for frequent fetching. It makes sense to not fetch that
data during the 'prefetch' maintenance task. Skip that remote in the
iteration without error. The skip_default_update member is initialized
in remote.c:handle_config() as part of initializing the 'struct remote'.

Signed-off-by: Derrick Stolee <redacted>
---
 builtin/gc.c           | 3 +++
 t/t7900-maintenance.sh | 8 +++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/builtin/gc.c b/builtin/gc.c
index 9d35f7da50d8..98a803196b88 100644
--- a/builtin/gc.c
+++ b/builtin/gc.c

@@ -878,6 +878,9 @@ static int fetch_remote(struct remote *remote, void *cbdata)
 	struct maintenance_run_opts *opts = cbdata;
 	struct child_process child = CHILD_PROCESS_INIT;
 
+	if (remote->skip_default_update)
+		return 0;
+
 	child.git_cmd = 1;
 	strvec_pushl(&child.args, "fetch", remote->name,
 		     "--prefetch", "--prune", "--no-tags",

diff --git a/t/t7900-maintenance.sh b/t/t7900-maintenance.sh
index eadb800c08cc..b93ae014ee58 100755
--- a/t/t7900-maintenance.sh
+++ b/t/t7900-maintenance.sh

@@ -153,7 +153,13 @@ test_expect_success 'prefetch multiple remotes' '
 
 	test_cmp_config refs/prefetch/ log.excludedecoration &&
 	git log --oneline --decorate --all >log &&
-	! grep "prefetch" log
+	! grep "prefetch" log &&
+
+	test_when_finished git config --unset remote.remote1.skipFetchAll &&
+	git config remote.remote1.skipFetchAll true &&
+	GIT_TRACE2_EVENT="$(pwd)/skip-remote1.txt" git maintenance run --task=prefetch 2>/dev/null &&
+	test_subcommand ! git fetch remote1 $fetchargs <skip-remote1.txt &&
+	test_subcommand git fetch remote2 $fetchargs <skip-remote1.txt
 '
 
 test_expect_success 'prefetch and existing log.excludeDecoration values' '