Always comes When converting from iso-8859-1 to utf-8. Latin Capital Letter a with Circumflex (Â) always comes along with § - sql

Question

Consider below steps
vi tgh.sql
copy below content into the file select to_char(sysdate,'DD-MON-YYYY')||'§' from dual and save the file
now check the unicode format of this file file -i tgh.sql. You will see output as below tgh.sql: text/plain; charset=iso-8859-1
Now convert it to utf8 using below command iconv -f iso-8859-1 -t utf-8 tgh.sql -o tghconv.sql
Lets check the format of this new file file -i tghconv.sql , you will see output as below tghconv.sql: text/plain; charset=utf-8
But if you cat this new file you will see completely different result
cat tghconv.sql
You will see output as below
select to_char(sysdate,'DD-MON-YYYY')||'§' from dual
We see an extra  in the output . This was never there initially when we created the file. I do understand that utf-8 hex code for § is xC2A7 and in utf-16 hex code for § is x00A7 and hex code for  is x00C2 so the conclusion that I can make is that file is somehow getting converted to utf-16 format. How can I avoid this? I am expecting my output to be as below even after converting to ut-8
select to_char(sysdate,'DD-MON-YYYY')||'§' from dual
Any suggestion?
Another update to code
Considering issue might be with my keyboard I slightly changed the test approach above, further details are below
vi tgh.sql
copy below content into the file select to_char(sysdate,'DD-MON-YYYY')||unistr('\00A7') from dual and save the file
Execute the above sql file using oracle sqlplus as below
_resultset=$(sqlplus -s username/password#TNSAliasnameforDB <<EOF
whenever sqlerror exit sql.sqlcode
whenever oserror exit sql.sqlcode
set heading off feedback off linesize 32736 trimspool on termout off tab off pagesize 0 long 100000 longc 100000;
spool tgh.out;
#tgh.sql
/
spool off;
EXIT
EOF
)
Now lets open the output file tgh.out.
cat tgh.out Running this we will get output as 03-AUG-2022§. Again the result is same we have an additional  in the output. If we verify the unicode format ( by running command file -i tgh.out) of file we will see it as utf-8.