diff --git a/modules/pre-commit.nix b/modules/pre-commit.nix
index 83f7c3ed..a334fb02 100644
--- a/modules/pre-commit.nix
+++ b/modules/pre-commit.nix
@@ -366,7 +366,7 @@ in
           if ! type -t git >/dev/null; then
             # This happens in pure shells, including lorri
             echo 1>&2 "WARNING: pre-commit-hooks.nix: git command not found; skipping installation."
-          elif [[ ! -e .git ]]; then
+          elif ! ${git}/bin/git rev-parse --git-dir &> /dev/null; then
             echo 1>&2 "WARNING: pre-commit-hooks.nix: .git not found; skipping installation."
           else
             # These update procedures compare before they write, to avoid