Git 2.28-rc1

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/RelNotes/2.28.0.txt

@@ -118,6 +118,14 @@ Performance, Internal Implementation, Development Support etc.
 
  * The effort to avoid using test_must_fail on non-git command continues.
 
+ * In 2.28-rc0, we corrected a bug that some repository extensions are
+   honored by mistake even in a version 0 repositories (these
+   configuration variables in extensions.* namespace were supposed to
+   have special meaning in repositories whose version numbers are 1 or
+   higher), but this was a bit too big a change.  The behaviour in
+   recent versions of Git where certaion extensions.* were honored by
+   mistake even in version 0 repositories has been restored.
+
 
 Fixes since v2.27
 -----------------

GIT-VERSION-GEN

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
-DEF_VER=v2.27.GIT
+DEF_VER=v2.28-rc1
 
 LF='
 '