The Failed log

+ sleep 1
++ gpg --list-public-keys --homedir /root/.gnupg
++ sed -n 4p
++ awk '{ print $1 }'
++ awk '{ sub(/.*\//, ""); print tolower($0) }'
++ awk '{print substr($0,length-7,9)}'
+ KEYNAME=bf81de15
+ printf '%s\n' '--> Key used to sign RPM files: bf81de15'

The succeeded Log
+ sleep 1
++ gpg --list-public-keys --homedir /root/.gnupg
++ sed -n 4p
++ awk '{ print $1 }'
++ awk '{print substr($0,length-7,9)}'
++ awk '{ sub(/.*\//, ""); print tolower($0) }'
+ KEYNAME=bf81de15
+ printf '%s\n' '--> Key used to sign RPM files: bf81de15'
--> Key used to sign RPM files: bf81de15

The problem is out of order execution.