fetchgit: allow disabling cone mode for sparse checkouts, fix test

1 files changed, 3 insertions, 1 deletions

diff --git a/pkgs/build-support/fetchgit/nix-prefetch-git b/pkgs/build-support/fetchgit/nix-prefetch-git
index 4e6f25b8dd7d..9c2048066ce4 100755
--- a/pkgs/build-support/fetchgit/nix-prefetch-git
+++ b/pkgs/build-support/fetchgit/nix-prefetch-git
@@ -49,6 +49,7 @@ Options:
       --hash h        Expected hash.
       --branch-name   Branch name to check out into
       --sparse-checkout Only fetch and checkout part of the repository.
+      --non-cone-mode Use non-cone mode for sparse checkouts.
       --deepClone     Clone the entire repository.
       --no-deepClone  Make a shallow clone of just the required ref.
       --leave-dotGit  Keep the .git directories.
@@ -77,6 +78,7 @@ for arg; do
             --branch-name) argfun=set_branchName;;
             --deepClone) deepClone=true;;
             --sparse-checkout) argfun=set_sparseCheckout;;
+            --non-cone-mode) nonConeMode=true;;
             --quiet) QUIET=true;;
             --no-deepClone) deepClone=;;
             --leave-dotGit) leaveDotGit=true;;
@@ -116,7 +118,7 @@ init_remote(){
     clean_git remote add origin "$url"
     if [ -n "$sparseCheckout" ]; then
         git config remote.origin.partialclonefilter "blob:none"
-        echo "$sparseCheckout" | git sparse-checkout set --stdin
+        echo "$sparseCheckout" | git sparse-checkout set --stdin ${nonConeMode:+--no-cone}
     fi
     ( [ -n "$http_proxy" ] && clean_git config http.proxy "$http_proxy" ) || true
 }