diff --git a/tests/functional/flakes/commit-lock-file-summary.sh b/tests/functional/flakes/commit-lock-file-summary.sh
index 21504eb21..314d43ec3 100644
--- a/tests/functional/flakes/commit-lock-file-summary.sh
+++ b/tests/functional/flakes/commit-lock-file-summary.sh
@@ -4,15 +4,9 @@ source ./common.sh
 
 TODO_NixOS
 
-requireGit
+createFlake1
 
-flake1Dir=$TEST_ROOT/flake1
 lockfileSummaryFlake=$TEST_ROOT/lockfileSummaryFlake
-
-createGitRepo "$flake1Dir" ""
-createSimpleGitFlake "$flake1Dir"
-nix registry add --registry "$registry" flake1 "git+file://$flake1Dir"
-
 createGitRepo "$lockfileSummaryFlake" "--initial-branch=main"
 
 # Test that the --commit-lock-file-summary flag and its alias work
diff --git a/tests/functional/flakes/common.sh b/tests/functional/flakes/common.sh
index cc9b2e466..0a020a1d7 100644
--- a/tests/functional/flakes/common.sh
+++ b/tests/functional/flakes/common.sh
@@ -38,12 +38,21 @@ EOF
 }
 
 createSimpleGitFlake() {
+    requireGit
     local flakeDir="$1"
     writeSimpleFlake "$flakeDir"
     git -C "$flakeDir" add flake.nix simple.nix shell.nix simple.builder.sh config.nix
     git -C "$flakeDir" commit -m 'Initial'
 }
 
+# Create a simple Git flake and add it to the registry as "flake1".
+createFlake1() {
+    flake1Dir="$TEST_ROOT/flake1"
+    createGitRepo "$flake1Dir" ""
+    createSimpleGitFlake "$flake1Dir"
+    nix registry add --registry "$registry" flake1 "git+file://$flake1Dir"
+}
+
 writeDependentFlake() {
     local flakeDir="$1"
     cat > "$flakeDir/flake.nix" <<EOF
diff --git a/tests/functional/flakes/dubious-query.sh b/tests/functional/flakes/dubious-query.sh
index b481b5f81..c147034c3 100644
--- a/tests/functional/flakes/dubious-query.sh
+++ b/tests/functional/flakes/dubious-query.sh
@@ -2,11 +2,8 @@
 
 source ./common.sh
 
-requireGit
-
-repoDir="$TEST_ROOT/repo"
-createGitRepo "$repoDir"
-createSimpleGitFlake "$repoDir"
+createFlake1
+repoDir="$flake1Dir"
 
 # Check that a flakeref without a query is accepted correctly.
 expectStderr 0 nix --offline build --dry-run "git+file://$repoDir#foo"
diff --git a/tests/functional/flakes/edit.sh b/tests/functional/flakes/edit.sh
index 0fdf8b95a..fda5c29fd 100755
--- a/tests/functional/flakes/edit.sh
+++ b/tests/functional/flakes/edit.sh
@@ -2,12 +2,7 @@
 
 source ./common.sh
 
-requireGit
-
-flake1Dir=$TEST_ROOT/flake1
-
-createGitRepo "$flake1Dir"
-createSimpleGitFlake "$flake1Dir"
+createFlake1
 
 export EDITOR=cat
 nix edit "$flake1Dir#" | grepQuiet simple.builder.sh
diff --git a/tests/functional/flakes/shebang.sh b/tests/functional/flakes/shebang.sh
index 23db19baa..645b1fa38 100644
--- a/tests/functional/flakes/shebang.sh
+++ b/tests/functional/flakes/shebang.sh
@@ -4,15 +4,9 @@ source ./common.sh
 
 TODO_NixOS
 
-requireGit
+createFlake1
 
-flake1Dir=$TEST_ROOT/flake1
 scriptDir=$TEST_ROOT/nonFlake
-
-createGitRepo "$flake1Dir" ""
-createSimpleGitFlake "$flake1Dir"
-nix registry add --registry "$registry" flake1 "git+file://$flake1Dir"
-
 mkdir -p "$scriptDir"
 
 cat > "$scriptDir/shebang.sh" <<EOF