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-rwxr-xr-xtools/go_branch.sh6
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/go_branch.sh b/tools/go_branch.sh
index d9e79401d..ddb9b6e7b 100755
--- a/tools/go_branch.sh
+++ b/tools/go_branch.sh
@@ -59,7 +59,11 @@ git checkout -b go "${go_branch}"
# Start working on a merge commit that combines the previous history with the
# current history. Note that we don't actually want any changes yet.
-git merge --allow-unrelated-histories --no-commit --strategy ours ${head}
+#
+# N.B. The git behavior changed at some point and the relevant flag was added
+# to allow for override, so try the only behavior first then pass the flag.
+git merge --no-commit --strategy ours ${head} || \
+ git merge --allow-unrelated-histories --no-commit --strategy ours ${head}
# Sync the entire gopath_dir and go.mod.
rsync --recursive --verbose --delete --exclude .git --exclude README.md -L "${gopath_dir}/" .