First of: This not actually an issue of this repository but of this, however, as that is a fork, I can't open an Issue there.
Now the issue:
As per this line it is assumed, that every repository uses 'master' as default branch, but for many (most ?) repositories this is not the case (anymore), therefore the resulting URL is wrong.
According to this stackoverflow thread this should easily be solvable by replacing 'master' with 'HEAD'.
First of: This not actually an issue of this repository but of this, however, as that is a fork, I can't open an Issue there.
Now the issue: As per this line it is assumed, that every repository uses 'master' as default branch, but for many (most ?) repositories this is not the case (anymore), therefore the resulting URL is wrong.
According to this stackoverflow thread this should easily be solvable by replacing 'master' with 'HEAD'.