--- /usr/portage/eclass/mercurial.eclass	2010-01-17 14:05:39.000000000 +0200
+++ /usr/portage/eclass/mercurial.eclass	2010-02-26 14:29:38.000000000 +0200
@@ -112,11 +112,13 @@ 
 
 	# Checkout working copy:
 	einfo "Creating working directory in ${WORKDIR}/${module} (revision: ${EHG_REVISION})"
-	hg clone \
+	mkdir "${WORKDIR}/${module}"
+	ln -s "${hg_src_dir}/${EHG_PROJECT}/${module}"/.hg "${WORKDIR}/${module}"/.hg || die
+	hg update \
 		${EHG_QUIET_CMD_OPT} \
-		--rev="${EHG_REVISION}" \
-		"${hg_src_dir}/${EHG_PROJECT}/${module}" \
-		"${WORKDIR}/${module}" || die "hg clone failed"
+		-r "${EHG_REVISION}" -C \
+		-R "${WORKDIR}/${module}" || die "hg update failed"
+	rm "${WORKDIR}/${module}"/.hg
 }
 
 # @FUNCTION: mercurial_src_unpack