diff --git a/.travis.yml b/.travis.yml
index 37944df572..241ac12bcc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -24,6 +24,8 @@ before_install:
       HOMEBREW_REPOSITORY="$(brew --repo)";
       sudo chown -R "$USER" "$HOMEBREW_REPOSITORY/Library/Taps";
       mv "$HOMEBREW_REPOSITORY/Library/Taps" "$PWD/Library";
+      git -C Library/Taps/homebrew/homebrew-core fetch --force origin;
+      git -C Library/Taps/homebrew/homebrew-core checkout --force -B master origin/master;
       sudo rm -rf "$HOMEBREW_REPOSITORY";
       sudo ln -s "$PWD" "$HOMEBREW_REPOSITORY";
       git clone --depth=1 https://github.com/Homebrew/homebrew-test-bot Library/Taps/homebrew/homebrew-test-bot;