Fix `download.sh` bug

Fixed a comment being interpreted as a command. Actually tested a build this time.

scripts/download.sh

diff --git a/scripts/download.sh b/scripts/download.sh
index 1be7c9f..eb9ce59 100755
--- a/scripts/download.sh
+++ b/scripts/download.sh
@@ -85,9 +85,9 @@
             if [ "$3" == "unknown" ]; then
                 git_retry clone --depth 1 $1 $2
             else
-                # git clone $1 $2
-                # git checkout $3
-                { git clone --branch $3 --single-branch $1 $2; } || \ # Not gonna retry- this is more likely to fail than not
+                # Not gonna retry on the first `git clone`- the backup command
+                # exists anyway
+                { git clone --branch $3 --single-branch $1 $2; } ||
                 { git_retry clone $1 $2 && git -C $2 checkout $3; }
             fi
         else