set -e
set -o pipefail
-git-rev-list main/${STTM_MASTER-master}..main/pretest | nl -ba | tac | \
+revspec=main/${STTM_MASTER-master}..main/pretest
+
+echo "testing $revspec..."
+
+git-rev-list $revspec | nl -ba | tac | \
while read num rev; do
echo >&2 ""
echo >&2 "testing $num $rev"