diff --git a/tests/functional/fetchGit.sh b/tests/functional/fetchGit.sh
index 46532c025..c6a482035 100644
--- a/tests/functional/fetchGit.sh
+++ b/tests/functional/fetchGit.sh
@@ -66,6 +66,9 @@ path2=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$repo; rev = \"
 # In pure eval mode, fetchGit with a revision should succeed.
 [[ $(nix eval --raw --expr "builtins.readFile (fetchGit { url = file://$repo; rev = \"$rev2\"; } + \"/hello\")") = world ]]
 
+# But without a hash, it fails
+expectStderr 1 nix eval --expr 'builtins.fetchGit "file:///foo"' | grepQuiet "'fetchGit' requires a locked input"
+
 # Fetch again. This should be cached.
 mv $repo ${repo}-tmp
 path2=$(nix eval --impure --raw --expr "(builtins.fetchGit file://$repo).outPath")
@@ -205,6 +208,8 @@ path6=$(nix eval --impure --raw --expr "(builtins.fetchTree { type = \"git\"; ur
 [[ $path3 = $path6 ]]
 [[ $(nix eval --impure --expr "(builtins.fetchTree { type = \"git\"; url = \"file://$TEST_ROOT/shallow\"; ref = \"dev\"; shallow = true; }).revCount or 123") == 123 ]]
 
+expectStderr 1 nix eval --expr 'builtins.fetchTree { type = "git"; url = "file:///foo"; }' | grepQuiet "'fetchTree' requires a locked input"
+
 # Explicit ref = "HEAD" should work, and produce the same outPath as without ref
 path7=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = \"file://$repo\"; ref = \"HEAD\"; }).outPath")
 path8=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = \"file://$repo\"; }).outPath")