"git push --recurse-submodules=on-demand" adds each submodule as an alternate with add_submodule_odb before checking whether the submodule has anything to push and pushing it if so.
However, it never accesses any objects from the submodule. In the parent process it uses the submodule's ref database to see if there is anything to push. The actual push (which does rely on objects) occurs in a child process. The same was true when this call was originally added in v1.7.11-rc0~111^2 (push: teach --recurse-submodules the on-demand option, 2012-03-29). Most likely it was added by analogy with fetch --recurse-submodules=on-demand, which did use the submodule's object database. Use is_submodule_populated_gently instead, which is simpler and cheaper. Signed-off-by: Stefan Beller <sbel...@google.com> --- Originally I intended to send this out as part of a larger series, but the series is getting too large series, sending all things in smaller units! Thanks, Stefan submodule.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/submodule.c b/submodule.c index 111a3007fc..e20216bc0f 100644 --- a/submodule.c +++ b/submodule.c @@ -966,7 +966,9 @@ static int push_submodule(const char *path, const struct string_list *push_options, int dry_run) { - if (add_submodule_odb(path)) + int code; + + if (!is_submodule_populated_gently(path, &code)) return 1; if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) { -- 2.14.0.rc0.3.g6c2e499285