compile_pkgs: fix repo_checkout for branch feed

When branch is provided to feed with `;` we should also replace that
with exact hash.

compile_pkgs

@@ -287,7 +287,7 @@ repo_checkout() {
 		if [ -z "$githash" ]; then
 			echo "$line" >> feeds.conf
 		else
-			echo "$line" | sed "s/\^.*$//;s/$/\^$githash/" >> feeds.conf
+			echo "$line" | sed "s/[;^].*$//;s/$/\^$githash/" >> feeds.conf
 		fi
 	done < "$src_dir/feeds.conf"
 }