From 9da4c426798657a3c266dcd778c3e3c327f7fbdb Mon Sep 17 00:00:00 2001
From: Robin Roth <robin-roth@online.de>
Date: Sat, 27 Aug 2016 09:51:18 -0500
Subject: [PATCH] Clarify that refspec is needed to checkout a git hash (#4564)

fixes #1531
---
 source_control/git.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/source_control/git.py b/source_control/git.py
index c8757023398..56addd883c1 100644
--- a/source_control/git.py
+++ b/source_control/git.py
@@ -46,8 +46,9 @@ options:
         default: "HEAD"
         description:
             - What version of the repository to check out.  This can be the
-              full 40-character I(SHA-1) hash, the literal string C(HEAD), a
-              branch name, or a tag name.
+              the literal string C(HEAD), a branch name, a tag name. 
+              It can also be a I(SHA-1) hash, in which case C(refspec) needs 
+              to be specified if the given revision is not already available.
     accept_hostkey:
         required: false
         default: "no"