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-rw-r--r--doc/src/guide/updating.asciidoc4
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/src/guide/updating.asciidoc b/doc/src/guide/updating.asciidoc
index 8eeb0bf..f96fed8 100644
--- a/doc/src/guide/updating.asciidoc
+++ b/doc/src/guide/updating.asciidoc
@@ -79,3 +79,7 @@ You can also name the file differently or put it in a separate folder
by modifying the value for `ERLANG_MK_BUILD_CONFIG`. You can also
tell Erlang.mk to use a different temporary directory by changing
the `ERLANG_MK_BUILD_DIR` variable.
+
+If you want to use a different repository or a specific commit for
+updating, you may use the variables `ERLANG_MK_REPO` and
+`ERLANG_MK_COMMIT`.