https://tracker.debian.org/media/packages/x/xlsxwriter/control-1.1.2-0.2
The package does not seem to have a current version control repository.
That would be a good start. There doesn't seem to be a project in
salsa.debian.org and it would make things a lot easier when asking for
help with packaging changes, to have a URL in Salsa.
There seems to be a project for xlsxwriter:
https://salsa.debian.org/python-team/packages/xlsxwriter
However, I am not sure whether this one corresponds to the package on
tracker.debian.org, it also would be great to make sure whether it does.