diff --git a/pkgs/additional/sane-scripts/src/sane-clone b/pkgs/additional/sane-scripts/src/sane-clone
index ff2e9f53..cd747512 100755
--- a/pkgs/additional/sane-scripts/src/sane-clone
+++ b/pkgs/additional/sane-scripts/src/sane-clone
@@ -6,6 +6,8 @@
 srcattr="$1.src"
 basedir=/home/colin/ref/repos
 
+# fetchFromGitHub: provides src.{gitRepoUrl,owner,repo}
+# fetchFromGitLab: provides src.gitRepoUrl only
 repourl="$(nix eval nixpkgs#$srcattr.gitRepoUrl | jq --raw-output)"
 repoowner="$(nix eval nixpkgs#$srcattr.owner | jq --raw-output)"
 reponame="$(nix eval nixpkgs#$srcattr.repo | jq --raw-output)"