add sha, which-branch to gitconfig. add is_ssh.

dotfiles/gitconfig

@@ -15,9 +15,15 @@
 	reb = "!r() { git rebase -i HEAD~$1; }; r"
 	suir = submodule update --init --recursive
         poh = push origin HEAD
+        pohm = push origin HEAD:master
+        
+        # Diff a file or show it in git's pager if it is untracked
         du = "!d() { git ls-files $1 --error-unmatch 2>/dev/null 1>/dev/null && git diff $1 || `git config --get core.pager` $1; }; d"
+        which-branch = symbolic-ref HEAD --short
+        sha = rev-parse HEAD
+        branch-or-sha = "!bs() { git which-branch 2> /dev/null || git sha 2> /dev/null ; }; bs"
         amend = commit -a --amend -C HEAD
-        reset-origin = "r() {git reset --hard origin/$(git symbolic-ref HEAD); git suir}"
+        reset-origin = "!r() { git reset --hard origin/\"$(git parse-branch)\" && git suir; }; r"
         
 [core]
 	# Use custom `.gitignore` and `.gitattributes`
@@ -59,4 +65,4 @@
 	name = Ivan Malison
 
 [merge]
-       conflictstyle = diff3
+       conflictstyle = diff3