Enable to checkout from specified date

diff --git a/builder.sh b/builder.sh
index dac478d43ba526b87a79f9a2bce74ee9ae2afa16..101028b711fcc080dfb2e7ae2a7b7044954c126c 100755 (executable)
--- a/builder.sh
+++ b/builder.sh
@@ -780,6 +780,9 @@ get_spec() {
                git checkout "$CVSTAG" -- || exit
                git symbolic-ref -q HEAD > /dev/null &&
                        git merge '@{u}'
+               if [ -n "CVSDATE" ]; then
+                       git checkout $(git rev-list -n1 --before="'$CVSDATE'" $CVSTAG) || exit 1
+               fi
        fi
 
        if [ ! -f "$ASSUMED_NAME/$SPECFILE" ]; then