add aliases to sync with other remotes and checkout pull requests

git/gitconfig

@@ -28,8 +28,10 @@
     ra = !git r --all
     l = "!source ~/.githelpers && pretty_git_log"
     la = !git l --all
+    sync = "!source ~/.githelpers && sync_to_remote"
 
     todo = grep --heading --break --ignore-case -e ' FIX: *' -e ' TODO: *'
+    pr = "!source ~/.githelpers && get_pr"
 [merge]
     tool = vimdiff
     ff = false

git/githelpers

@@ -40,3 +40,17 @@ pretty_git_log() {
         less -FXRS
 }
 
+sync_to_remote() {
+    REMOTE=$1
+    : ${REMOTE:="upstream"}
+    BRANCH=`git rev-parse --abbrev-ref HEAD`
+    git fetch upstream
+    git merge --ff-only ${REMOTE}/${BRANCH};
+}
+
+get_pr() {
+    REMOTE=$2
+    : ${REMOTE:="upstream"}
+    git fetch ${REMOTE} pull/${1}/head:pr/${1}
+    git checkout pr/${1}
+}