escape special characters on bash script

[endel]

If the branch name contains special bash characters, such as (, ), |, &, etc, the deploy would fail:

bash: -c: line 1: syntax error near unexpected token `('
bash: -c: line 1: `cd /home/deploy/source && git reset --hard origin/xyz-(example)'

[endel]

(users of GitHub Desktop are more likely to use special characters as branch names)