Sources

diff --git a/GNU/grub/Makefile b/GNU/grub/Makefile
index 538654d..b1595f4 100644
--- a/GNU/grub/Makefile
+++ b/GNU/grub/Makefile
@@ -1,38 +1,87 @@
 #
 # Project Home:
 # ============
-# http://www.gnu.org/software/grub
+# https://www.gnu.org/software/grub
 #
-# Downloads:
-# =========
-# http://www.gnu.org/software/grub/grub-download.html
-# ftp://ftp.gnu.org/gnu/grub
+# Savannah cGit:
+# =============
+# http://git.savannah.gnu.org/cgit/grub.git
 #
+# Clone:
+# =====
+# git clone git://git.savannah.gnu.org/grub.git
+# git clone https://git.savannah.gnu.org/git/grub.git
+# git clone ssh://git.savannah.gnu.org/srv/git/grub.git
+#
+
+url        = https://git.savannah.gnu.org/git/
+
+repo_name  = grub
+pkg_name   = grub
+
+#
+# List of tags to be extracted:
+# ============================
+#                                               hash | tag
+#            ----------------------------------------+-----
+revisions  = 2a2e10c1b39672de3d5da037a50d5c371f49b40d:2.04
+revisions += 837fe48deb89b31710904de4e9c7dda258490e1c:2.05.1
 
-url         = http://ftp.gnu.org/gnu/grub
+git_repo   = .git_clone
+suffix     = tar.xz
 
-versions    = 2.00 2.04
-pkgname     = grub
-suffix      = tar.xz
+versions   = $(foreach tag, $(revisions), $(shell echo $(tag) | cut -f 2 -d ':'))
 
-tarballs    = $(addsuffix .$(suffix), $(addprefix $(pkgname)-, $(versions)))
-sha1s       = $(addsuffix .sha1sum, $(tarballs))
+tarballs   = $(addsuffix .$(suffix), $(addprefix $(repo_name)-, $(versions)))
+sha1s      = $(addsuffix .sha1sum, $(tarballs))
 
-all: $(tarballs) $(sha1s)
 
-.PHONY: downloads_clean
+TARGETS = repository_clean
 
-$(tarballs):
-	@echo -e "\n======= Downloading source tarballs =======\n"
-	@for tarball in $(tarballs) ; do \
-	  wget -N $(url)/$$tarball ; \
+
+all: $(TARGETS)
+
+.PHONY: downloads_clean repository_clean
+
+$(git_repo):
+	@echo -e "\n======= Clone $(repo_name).git repository =======\n"
+	@rm -rf $(repo_name)
+	@git clone $(url)/$(repo_name).git $(repo_name)
+	@touch $@
+
+$(tarballs): $(git_repo)
+	@for revision in $(revisions) ; do \
+	  hash=`echo $${revision}    | cut -f 1 -d ':'` ; \
+	  version=`echo $${revision} | cut -f 2 -d ':'` ; \
+	  if [ ! -f $(repo_name)-$${version}.$(suffix) ]; then \
+	    echo -e "\n======= Creating '$(repo_name)-$${version}.$(suffix)' snapshot =======" ; \
+	    ( cd $(repo_name) && \
+	      git archive --format=tar --prefix=$(repo_name)-$${version}/ $${hash} | \
+	      xz >../$(repo_name)-$${version}.$(suffix) ) ; \
+	  fi ; \
+	  tar xJf $(pkg_name)-$${version}.$(suffix) ; \
+	  ( cd $(pkg_name)-$${version} ; \
+	    # ======= Remove ~rc revision ======= ; \
+	    echo -e "\n======= Remove ~rc (release candidate) micro version =======" ; \
+	    rc=`echo $${version} | cut -f3 -d'.'` ; \
+	    if [ "x$$rc" != "x" ] ; then \
+	      sed -i "s,\[[0-9]\.[0-9][0-9]~rc[1-9]*\],\[$${version}\]," configure.ac ; \
+	    fi ; \
+	    ./bootstrap ; rm -rf autom4te.cache .gitignore .travis.yml ) ; \
+	  tar cJf $(pkg_name)-$${version}.$(suffix) $(pkg_name)-$${version} ; \
+	  rm -rf $(pkg_name)-$${version} ; \
 	done
 
 $(sha1s): %.$(suffix).sha1sum : %.$(suffix)
 	@for tarball in $< ; do \
-	  echo -e "\n======= Calculation the '$$tarball' sha1sum =======\n" ; \
-	  sha1sum --binary $$tarball > $$tarball.sha1sum ; \
+	  echo -e "\n======= Calculation the '$${tarball}' sha1sum =======" ; \
+	  sha1sum --binary $${tarball} > $${tarball}.sha1sum ; \
 	done
 
+repository_clean: $(sha1s)
+	@echo -e "\n======= Remove cloned $(repo_name).git repository =======\n"
+	@rm -rf $(git_repo) $(repo_name)
+
 downloads_clean:
 	@rm -rf $(tarballs) $(sha1s)
+	@rm -rf $(git_repo) $(repo_name)