I’ve written a script to update my git repos automatically.

It worked until I added a check as to whether the current branch was the main branch.

At this point, the script bombs out on the line of the if guards saying:

[[main: command not found

The script is:

#!/bin/bash

api='/C/Repos/me/services/api'

declare -a reposArray=($api)

for repo in "${reposArray[@]}"
do
    echo
    echo "updating $repo"
    cd $repo
    echo "fetching code"
    #git fetch --prune
    
    branch="$(git branch --show-current)"
    
    if [["$branch" != "main"]]; then
        git switch main
    fi  
    
    echo "merging remote into main"
    git merge
done

Any idea what is wrong?
Does main have a special meaning such that it needs to be escaped?
How would I escape a whole word like that?

Cheers