release script: Put full debugging output in log only.

scripts/release/make-release

@@ -75,7 +75,9 @@ if [[ -r configure && -r scripts/release/make-release-commit ]]; then
 }
     done
     archive_msg=${archive_msg#Find archives in }
-    scripts/release/check-gitignore
+    # shellcheck disable=SC2094
+    scripts/release/check-gitignore 2>>"${log_dir}/check-gitignore.log" \
+      > >(tee -a "${log_dir}/check-gitignore.log")
     IFS=" " read -r -a archives <<< "${archive_msg}"
     if [[ ${TAR+xset} != xset ]]; then
       for tar in gnutar gtar ; do