Merge branch 'en/sparse-checkout'

The behaviour of "sparse-checkout" in the state "git clone
--no-checkout" left was changed accidentally in 2.27, which has
been corrected.

* en/sparse-checkout:
  sparse-checkout: avoid staging deletions of all files

1 files changed, 4 insertions, 0 deletions

diff --git a/builtin/sparse-checkout.c b/builtin/sparse-checkout.c
index 95d0882417..595463be68 100644
--- a/builtin/sparse-checkout.c
+++ b/builtin/sparse-checkout.c
@@ -99,6 +99,10 @@ static int update_working_directory(struct pattern_list *pl)
 	struct lock_file lock_file = LOCK_INIT;
 	struct repository *r = the_repository;
 
+	/* If no branch has been checked out, there are no updates to make. */
+	if (is_index_unborn(r->index))
+		return UPDATE_SPARSITY_SUCCESS;
+
 	memset(&o, 0, sizeof(o));
 	o.verbose_update = isatty(2);
 	o.update = 1;