reproduce.tt: Set revCount for hg repos

The revision counting changes depending on which revision is cloned
initially, so clone the default branch first and then checkout the
required revision to match hydra's revCount.

Signed-off-by: Shea Levy <shea@shealevy.com>

src/root/reproduce.tt

@@ -110,7 +110,9 @@ if ! [ -d "$inputDir" ]; then
     requireCommand hg
     inputDirTmp="$inputDir.tmp"
     rm -rf "$inputDirTmp"
-    hg clone '[% input.uri %]' "$inputDirTmp" -r '[% input.revision %]'
+    hg clone '[% input.uri %]' "$inputDirTmp"
+    (cd "$inputDirTmp" && hg update '[% input.revision %]')
+    revCount="$(cd "$inputDirTmp" && (hg log -r '[% input.revision %]' --template "{rev}"))"
     rm -rf "$inputDirTmp/.hg"
     mv "$inputDirTmp" "$inputDir"
 fi