refs: improve comments about "reading" argument of "resolve_ref"

diff --git a/run-command.h b/run-command.h
index 5203a9ebb10b14bd06862abafed0ab73d7514a3d..4f2b7d7d403ee6d87fea5ba2dc32da7596965e5e 100644 (file)
--- a/run-command.h
+++ b/run-command.h
@@ -42,6 +42,7 @@ struct child_process {
        unsigned no_stderr:1;
        unsigned git_cmd:1; /* if this is to be git sub-command */
        unsigned stdout_to_stderr:1;
+       void (*preexec_cb)(void);
 };
 
 int start_command(struct child_process *);