Modified a script that does the same thing for chrome. But this script will download and install the latest version of Brave directly from their web site

#!/bin/sh

dmgfile="Brave-Broswer.dmg"
volname="Brave Browser"
logfile="/Library/LogsBraveInstallScript.log"

url='https://brave-browser-downloads.s3.brave.com/latest/Brave-Browser.dmg'


/bin/echo "--" >> ${logfile}
/bin/echo "`date`: Downloading latest version." >> ${logfile}
/usr/bin/curl -s -o /tmp/${dmgfile} ${url}
/bin/echo "`date`: Mounting installer disk image." >> ${logfile}
/usr/bin/hdiutil attach /tmp/${dmgfile} -nobrowse -quiet
/bin/echo "`date`: Installing..." >> ${logfile}
ditto -rsrc "/Volumes/${volname}/Brave Browser.app" "/Applications/Brave Browser.app"
/bin/sleep 10
/bin/echo "`date`: Unmounting installer disk image." >> ${logfile}
/usr/bin/hdiutil detach $(/bin/df | /usr/bin/grep "${volname}" | awk '{print $1}') -quiet
/bin/sleep 10
/bin/echo "`date`: Deleting disk image." >> ${logfile}
/bin/rm /tmp/"${dmgfile}"

exit 0