fetch: Speed up fetch of large numbers of refs

diff --git a/git-pull.sh b/git-pull.sh
index 0f24182974fe2040c950b846decf360c1c22dbb1..0bbd5bf7df185acd24302f9e5ce06e4a314d040a 100755 (executable)
--- a/git-pull.sh
+++ b/git-pull.sh
@@ -119,11 +119,19 @@ error_on_no_merge_candidates () {
 }
 
 test true = "$rebase" && {
-       git update-index --ignore-submodules --refresh &&
-       git diff-files --ignore-submodules --quiet &&
-       git diff-index --ignore-submodules --cached --quiet HEAD -- ||
-       die "refusing to pull with rebase: your working tree is not up-to-date"
-
+       if ! git rev-parse -q --verify HEAD >/dev/null
+       then
+               # On an unborn branch
+               if test -f "$GIT_DIR/index"
+               then
+                       die "updating an unborn branch with changes added to the index"
+               fi
+       else
+               git update-index --ignore-submodules --refresh &&
+               git diff-files --ignore-submodules --quiet &&
+               git diff-index --ignore-submodules --cached --quiet HEAD -- ||
+               die "refusing to pull with rebase: your working tree is not up-to-date"
+       fi
        oldremoteref= &&
        . git-parse-remote &&
        remoteref="$(get_remote_merge_branch "$@" 2>/dev/null)" &&