From 8b1a9523bd5050a51310a04bec6c0a2065d2b04b Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Mon, 2 Sep 2024 12:12:55 +0300
Subject: Fix "ambiguous argument 'FETCH_HEAD'" error which appeared after
 git-fetch fails and makes FETCH_HEAD file empty

---
 load/load-with-metadata.in | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/load/load-with-metadata.in b/load/load-with-metadata.in
index 293f8db..01ccd16 100644
--- a/load/load-with-metadata.in
+++ b/load/load-with-metadata.in
@@ -99,11 +99,14 @@ if ! remote_url="$(git -C "$repo_dir" config --get remote.origin.url)"; then
   error "'$repo_dir' is not a git repository"
 fi
 
-# Save the repository name and branch of where the latest commit has been
+# Save the repository name and branch of where the current commit has been
 # fetched from, separated by space. For example 'origin master'.
 #
-refs=$(git -C "$repo_dir" log -1 --format=%D FETCH_HEAD)
-repo_branch="$(sed -n -E 's%^.+ ([^/ ]+)/([^/ ]+)$%\1 \2%p' <<<"$refs")"
+# Note that if the commit belongs to multiple repositories/branches, then we
+# extract the first their pair from the git-log output.
+#
+refs=$(git -C "$repo_dir" log -1 --format=%D)
+repo_branch="$(sed -n -E 's%^[^/]+ ([^/ ]+)/([^/ ,]+).*$%\1 \2%p' <<<"$refs")"
 
 if [[ -z "$repo_branch" ]]; then
   error "unable to extract repository and branch from '$refs'"
-- 
cgit v1.1