Merge branch 'jc/refuse-push-to-current'

* jc/refuse-push-to-current:
  receive-pack: explain what to do when push updates the current branch

diff --cc builtin-receive-pack.c
index 596dfe92233e9ad07cebfa7e36a404ea909da716,6f61c45fdd039b20688bedb91b6470c5ae105dad..6de186c397fcd5eaab2331db56546acab5f545f4
--- 1/builtin-receive-pack.c
--- 2/builtin-receive-pack.c
+++ b/builtin-receive-pack.c
@@@ -9,9 -9,10 +9,10 @@@
  #include "remote.h"
  #include "transport.h"
  
 -static const char receive_pack_usage[] = "git-receive-pack <git-dir>";
 +static const char receive_pack_usage[] = "git receive-pack <git-dir>";
  
  enum deny_action {
+       DENY_UNCONFIGURED,
        DENY_IGNORE,
        DENY_WARN,
        DENY_REFUSE,