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-rw-r--r--tool/lib/vcs.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/tool/lib/vcs.rb b/tool/lib/vcs.rb
index 370530d53f..1868553e74 100644
--- a/tool/lib/vcs.rb
+++ b/tool/lib/vcs.rb
@@ -605,7 +605,7 @@ class VCS
end
rev unless rev.empty?
end
- unless /./.match(from) or /./.match(from = branch_beginning(url))
+ unless (from && /./.match(from)) or ((from = branch_beginning(url)) && /./.match(from))
warn "no starting commit found", uplevel: 1
from = nil
end