From c457ec980faf2e5947b273584ce5d3c2f13afd3e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Tue, 28 Nov 2017 16:09:19 +0200
Subject: [PATCH] Add a comment about git-svn rebase

---
 Dockerfile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Dockerfile b/Dockerfile
index faea45a..12c6d78 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,6 +14,8 @@ RUN git config --global user.name "LLVM MinGW" && \
 WORKDIR /build
 
 # When cloning master and checking out a pinned old hash, we can't use --depth=1.
+# Do the git-svn rebase to populate git-svn information, to make
+# "clang --version" produce SVN based version numbers.
 RUN git clone -b master https://github.com/llvm-mirror/llvm.git && \
     cd llvm/tools && \
     git clone -b master https://github.com/llvm-mirror/clang.git && \