Clone gentoo repo over git

This solve a race condition verifying manifests

gentoostrap.sh

@@ -215,6 +215,19 @@ build-gentoo-chroot() {
 	# Sync repositories
 	log "Getting ebuild repositories"
 	emerge-webrsync
+	log "Configuring gentoo repo"
+	cat <<-EOF > "/etc/portage/repos.conf/gentoo.conf"
+	[DEFAULT]
+	main-repo = gentoo
+
+	[gentoo]
+	location = /usr/portage
+	#sync-depth = 1
+	sync-type = git
+	sync-uri = https://github.com/gentoo-mirror/gentoo.git
+	sync-git-verify-commit-signature = true
+	auto-sync = yes
+	EOF
 	emerge --sync
 
 	# Get the stable plasma/systemd profile and select it