I notice after removal from unstable tortoisehg is back in new.
However it seems that the package still build-depends on python 2 packages. In particular it depends on python-pyqt5.qsci which has been dropped by the qscintilla2 source package and decrufted from bullseye/sid. It seems to me that if this package is going to make a comeback it needs to migrate to python 3. (note: I am just a random dd who stubled across this package, the final descision of course rests with the ftpmasters and release team).