Append the fetched heads (in order to use them later).
tree22d91ed5adeaae687b082ab885de83f0e0e24f65
-rwxr-xr-x 1495 parseRCS-indep
-rwxr-xr-x 294 parseRCS-merging-init
-rwxr-xr-x 1788 parsecvs-as-sidehist