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libfetchers: Fix fetchGit with ref = "HEAD"

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This seems to have been broken in ee9fa0d360.
Adding the HEAD:HEAD refspec looks like the correct solution.

Suggested-by: hxtmdev on github
This commit is contained in:
Sergei Zimmerman 2025-11-29 05:39:04 +03:00
parent 048a58d331
commit 18f3598d57
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2 changed files with 5 additions and 1 deletions
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2
src/libfetchers/git.cc
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@ -836,7 +836,7 @@ struct GitInputScheme : InputScheme
auto fetchRef = getAllRefsAttr(input) ? "refs/*:refs/*"
: input.getRev() ? input.getRev()->gitRev()
: ref.compare(0, 5, "refs/") == 0 ? fmt("%1%:%1%", ref)
: ref == "HEAD" ? ref
: ref == "HEAD" ? "HEAD:HEAD"
: fmt("%1%:%1%", "refs/heads/" + ref);
repo->fetch(repoUrl.to_string(), fetchRef, shallow);

4
tests/functional/fetchGit.sh
View file

@ -228,6 +228,10 @@ path8=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = \"file://$rep
rev4=$(git -C "$repo" rev-parse HEAD)
rev4_nix=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = \"file://$repo\"; ref = \"HEAD\"; }).rev")
[[ $rev4 = "$rev4_nix" ]]
export _NIX_FORCE_HTTP=1
rev4_nix=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = \"file://$repo\"; ref = \"HEAD\"; }).rev")
[[ $rev4 = "$rev4_nix" ]]
unset _NIX_FORCE_HTTP
# The name argument should be handled
path9=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = \"file://$repo\"; ref = \"HEAD\"; name = \"foo\"; }).outPath")