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-rw-r--r--builtin/index-pack.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index 0a27bab..d450a6a 100644
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -1730,6 +1730,8 @@ int cmd_index_pack(int argc, const char **argv, const char *prefix)
usage(index_pack_usage);
if (fix_thin_pack && !from_stdin)
die(_("--fix-thin cannot be used without --stdin"));
+ if (from_stdin && !startup_info->have_repository)
+ die(_("--stdin requires a git repository"));
if (!index_name && pack_name)
index_name = derive_filename(pack_name, ".idx", &index_name_buf);
if (keep_msg && !keep_name && pack_name)