README: Mention mirrordir and gitproxy

Signed-off-by: George Dunlap <george.dunlap@citrix.com>

diff --git a/README.md b/README.md
index 7b9da84bbb0c05e1c186178229040dff3e7cf24f..cda2b2ac7d687d61f5ecbc429b1377031e8a5410 100644 (file)
--- a/README.md
+++ b/README.md
@@ -128,7 +128,7 @@ the patches will be copied into xsa.git/xsa${n}-${version}/.
 
 ## Creating initial setup
 
-`xsatool repo init`
+`xsatool repo init [---mirrordir=$PATH|--git-proxy=$URL]`
 
 This command will, in the current directory:
 
@@ -143,6 +143,9 @@ Existing repositories will be left alone.
 even if they exist already.  (Command `git config
 config.origin.pushurl http://localhost/fail`.)
 
+The `--mirrordir` or `--git-proxy` arguments can be used to specify a
+cache used for git clones *during build*.
+
 **TODO**: Enable `git rerere` when creating new repositories
 
 ## Creating or updating the initial global metadata