In /usr/bin/mh_clean line 19:
. /usr/share/maven-repo-helper/mh_lib.sh
  ^-- SC1091: Not following: /usr/share/maven-repo-helper/mh_lib.sh was not specified as input (see shellcheck -x).


In /usr/bin/mh_clean line 32:
  rm -f `cat debian/.mh_clean` debian/.mh_clean
        ^--------------------^ SC2046: Quote this to prevent word splitting.
        ^--------------------^ SC2006: Use $(...) notation instead of legacy backticked `...`.

Did you mean: 
  rm -f $(cat debian/.mh_clean) debian/.mh_clean

For more information:
  https://www.shellcheck.net/wiki/SC2046 -- Quote this to prevent word splitt...
  https://www.shellcheck.net/wiki/SC1091 -- Not following: /usr/share/maven-r...
  https://www.shellcheck.net/wiki/SC2006 -- Use $(...) notation instead of le...