My work in progress bash profile to make the git repos nicer to work with...

.bashrc

if tput setaf 1 &> /dev/null; then
	tput sgr0
	if [[ $(tput colors) -ge 256 ]] 2>/dev/null; then
		MAGENTA=$(tput setaf 9)
		ORANGE=$(tput setaf 172)
		GREEN=$(tput setaf 190)
		PURPLE=$(tput setaf 141)
		WHITE=$(tput setaf 256)
	else
		MAGENTA=$(tput setaf 5)
		ORANGE=$(tput setaf 4)
		GREEN=$(tput setaf 2)
		PURPLE=$(tput setaf 1)
		WHITE=$(tput setaf 7)
	fi
	BOLD=$(tput bold)
	RESET=$(tput sgr0)
else
	MAGENTA="\033[1;31m"
	ORANGE="\033[1;33m"
	GREEN="\033[1;32m"
	PURPLE="\033[1;35m"
	WHITE="\033[1;37m"
	BOLD=""
	RESET="\033[m"
fi
 
export MAGENTA
export ORANGE
export GREEN
export PURPLE
export WHITE
export BOLD
export RESET

function isGitDirectory() {
    git branch 1> /dev/null 2>&1
    if [ "$?" == "0" ]
    then
        echo "1"
    else
        echo "0"
    fi
}

function isSvnDirectory() {
    svn info 1> /dev/null 2>&1
    if [ "$?" == "0" ]
    then
        echo "1"
    else
        echo "0"
    fi
}
 
function parse_git_branch() {
    git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/\1/"
}

function buildPrompt() {

    CWD=`pwd`
    NCWD=${CWD##$HOME}
    if [ "$CWD" != "$NCWD" ]
    then
        CWD="~$NCWD"
    fi

    OUT="$GREEN${CWD}$WHITE"
    if [ "$(isGitDirectory)" == "1" ]
    then
        COMMIT_ID="$(git log -n1 --pretty=oneline --abbrev-commit --no-color | cut -d' ' -f1)"
        COMMIT_DATE="$(git log -n 1 --date=relative | grep 'Date:' | sed -e 's/^Date:   \(.*\)$/\1/')"

        git_status="$(git status 2> /dev/null)"
        # Set color based on clean/staged/dirty.
        if [[ ${git_status} =~ "Changes to be committed" ]]; then
            G_STATE="dirty"
            G_COLOR="${PURPLE}"
            G_CHAR="●"
        else
            G_STATE="clean"
            G_COLOR="${GREEN}"
            G_CHAR="○"
        fi

        if [[ ${git_status} =~ "Changes not staged for commit" ]]; then
            S_STATE="dirty"
            S_CHAR="●"
        else
            S_STATE="clean"
            S_CHAR="○"
        fi


        if [[ ${git_status} =~ "Untracked files:" ]]; then
            U_STATE="dirty"
            U_CHAR="●"
        else
            U_STATE="clean"
            U_CHAR="○"
        fi

        echo " "
        echo "$RESET[$U_CHAR$S_CHAR$G_CHAR] $OUT on $G_COLOR$(parse_git_branch)$WHITE (ref: $COMMIT_ID, $COMMIT_DATE)"
        echo "\$ "
    elif [ "$(isSvnDirectory)" == "1" ]; then

        COMMIT_DATE="$(svn info | grep 'Last Changed Date:' | sed -e 's/^Last Changed Date: \(.*\)$/\1/' | cut -d' ' -f1,2)"
        COMMIT_TIMESTAMP=`date -j -f "%Y-%m-%d %H:%M:%S" "$COMMIT_DATE" +"%s"`
        CURRENT_TIMESTAMP=`date -j +"%s"`
        let "TIMESTAMP_DIFF = $CURRENT_TIMESTAMP - $COMMIT_TIMESTAMP"
        DATE_DIFF_DAY=$(date -j -u -f \"%s\" \"$TIMESTAMP_DIFF\" +%-j)
        DATE_DIFF_HOUR=$(date -j -u -f \"%s\" \"$TIMESTAMP_DIFF\" +%-H)
        DATE_DIFF_MIN=$(date -j -u -f \"%s\" \"$TIMESTAMP_DIFF\" +%-M)

        if [ "$DATE_DIFF_DAY" -gt "1" ]; then
            COMMIT_DATE="$DATE_DIFF_DAY days ago"
        elif [ $DATE_DIFF_HOUR -gt 1 ]; then
            COMMIT_DATE="$DATE_DIFF_HOUR hours ago"
        elif [ $DATE_DIFF_MIN -gt 1 ]; then
            COMMIT_DATE="$DATE_DIFF_MIN minutes ago"
        else
            COMMIT_DATE="$TIMESTAMP_DIFF seconds ago"
        fi

        REPO_ROOT="$(svn info 2> /dev/null | grep "^Repository Root:" | sed -e "s/Repository Root: \(.*\)/\1/" | grep [a-z])"
        REPO_REV="$(svn info 2> /dev/null | grep "^Revision:" | sed -e "s/Revision: \(.*\)/\1/" | grep [0-9])"
        SVN_PATH="$(svn info 2> /dev/null | grep "^URL:" | sed -e "s/URL: \(.*\)/\1/" | grep [a-z])"
        ROOT_PATH="$(svn info 2> /dev/null | grep "^Working Copy Root Path:" | sed -e "s/Working Copy Root Path: \(.*\)/\1/" | grep [a-z])"
        ROOT_PATH_REL=${ROOT_PATH##$HOME}
        if [ "$ROOT_PATH" != "" ] && [ "$ROOT_PATH" != "$(pwd)" ] && [ "$ROOT_PATH" != "$ROOT_PATH_REL" ]
        then
            ROOT_PATH=", symlink: ~$ROOT_PATH_REL"
        else
            ROOT_PATH=""
        fi


        SVN_REL_PATH=${SVN_PATH##$REPO_ROOT}
        if [ "$SVN_REL_PATH" != "$REPO_ROOT" ]
        then
            SVN_PATH="^$SVN_REL_PATH"
        fi

        echo " "
        echo "$RESET[SVN] $OUT on $GREEN$SVN_PATH$WHITE (rev $REPO_REV, $COMMIT_DATE$ROOT_PATH)"
        echo "\$ "
    else
        echo " "
        echo "$OUT"
        echo "\$ "
    fi
}
 
PS1='$(buildPrompt)'