diff --git a/run b/run
index a58476a..6bfacd2 100755
--- a/run
+++ b/run
@@ -125,10 +125,11 @@ step10() {
   local TO_="$BOUNDFN_"
   echo "Generating zig1.wasm.zst for $TO_"
   rm -fr "../zig-$TO_"
-  git clone . "../zig-${TO_}" $TO
+  git clone . "../zig-$TO_"
 
   {
-    pushd "../zig-$BOUNDFN_"
+    pushd "../zig-$TO_"
+    git checkout $TO
     cp "$OLDPWD/stage1/zig1.wasm.zst" stage1/
     patch -p1 <"$HERE/0.10.0-675-g9d93b2ccf1-TypeOf-hack.patch"
     fullbuild
@@ -145,10 +146,11 @@ step20() {
   local TO_="$C_AARCH64_"
   echo "Generating zig1.wasm.zst for $C_AARCH64_"
   rm -fr "../zig-$TO_"
-  git clone . "../zig-${TO_}" $TO
+  git clone . "../zig-$TO_"
 
   {
     pushd "../zig-$TO_"
+    git checkout $TO
     zstd -cd ../zig-$FROM_/stage1/zig1.wasm.zst >stage1/zig1.wasm
     fullbuild
     build/stage3/bin/zig build update-zig1
@@ -165,10 +167,11 @@ step30() {
 
   echo "Updating zig1.wasm from $FROM_ -> $TO_ in ../zig-$TO_"
   rm -fr "../zig-$TO_"
-  git clone . "../zig-$TO_" $TO
+  git clone . "../zig-$TO_"
 
   {
     pushd "../zig-$TO_"
+    git checkout $TO
     patch -p1 <"$HERE/0.10.0-747-g7b2a936173-CallOptions.patch"
     "../zig-$FROM_/build/stage3/bin/zig" build --zig-lib-dir lib update-zig1
     popd
@@ -184,10 +187,11 @@ step40() {
 
   echo "Updating zig1.wasm from $FROM_ -> $TO_ in ../zig-$TO_"
   rm -fr "../zig-$TO_"
-  git clone . "../zig-$TO_" $TO
+  git clone . "../zig-$TO_"
 
   {
     pushd "../zig-$TO_"
+    git checkout $TO
     cp ../zig-$FROM_/stage1/zig1.wasm stage1/zig1.wasm
     fullbuild
     build/stage3/bin/zig build update-zig1