git-fetch: Avoid reading packed refs over and over again

diff --git a/git-fetch.sh b/git-fetch.sh
index fb35815a5fbf1074f6a4a2fb08c6c9656c6a1654..38101a6ace2331707bb7a424d32b32f3699d3bab 100755 (executable)
--- a/git-fetch.sh
+++ b/git-fetch.sh
@@ -242,7 +242,7 @@ esac
 reflist=$(get_remote_refs_for_fetch "$@")
 if test "$tags"
 then
-       taglist=`IFS="  " &&
+       taglist=`IFS='  ' &&
                  echo "$ls_remote_result" |
                  while read sha1 name
                  do
@@ -438,17 +438,11 @@ case "$no_tags$tags" in
        *:refs/*)
                # effective only when we are following remote branch
                # using local tracking branch.
-               taglist=$(IFS=" " &&
+               taglist=$(IFS=' ' &&
                echo "$ls_remote_result" |
-               sed -n  -e 's|^\('"$_x40"'\)    \(refs/tags/.*\)^{}$|\1 \2|p' \
-                       -e 's|^\('"$_x40"'\)    \(refs/tags/.*\)$|\1 \2|p' |
+               git-show-ref --exclude-existing=refs/tags/ |
                while read sha1 name
                do
-                       git-show-ref --verify --quiet -- "$name" && continue
-                       git-check-ref-format "$name" || {
-                               echo >&2 "warning: tag ${name} ignored"
-                               continue
-                       }
                        git-cat-file -t "$sha1" >/dev/null 2>&1 || continue
                        echo >&2 "Auto-following $name"
                        echo ".${name}:${name}"