Merge branch 'jt/lazy-fetch'

Updates to on-demand fetching code in lazily cloned repositories.

* jt/lazy-fetch:
  fetch: no FETCH_HEAD display if --no-write-fetch-head
  fetch-pack: remove no_dependents code
  promisor-remote: lazy-fetch objects in subprocess
  fetch-pack: do not lazy-fetch during ref iteration
  fetch: only populate existing_refs if needed
  fetch: avoid reading submodule config until needed
  fetch: allow refspecs specified through stdin
  negotiator/noop: add noop fetch negotiator

1 files changed, 6 insertions, 2 deletions

diff --git a/submodule-config.c b/submodule-config.c
index e175dfbc38..c569e22aa3 100644
--- a/submodule-config.c
+++ b/submodule-config.c
@@ -777,10 +777,14 @@ static int gitmodules_fetch_config(const char *var, const char *value, void *cb)
 {
 	struct fetch_config *config = cb;
 	if (!strcmp(var, "submodule.fetchjobs")) {
-		*(config->max_children) = parse_submodule_fetchjobs(var, value);
+		if (config->max_children)
+			*(config->max_children) =
+				parse_submodule_fetchjobs(var, value);
 		return 0;
 	} else if (!strcmp(var, "fetch.recursesubmodules")) {
-		*(config->recurse_submodules) = parse_fetch_recurse_submodules_arg(var, value);
+		if (config->recurse_submodules)
+			*(config->recurse_submodules) =
+				parse_fetch_recurse_submodules_arg(var, value);
 		return 0;
 	}