(I am a relative newcomer to TortoiseHg, so bear with me :-) I use TortoiseHg on two machines to talk to my remote source repository. I made changes on one machine, committed th
Do a "Merge With" and check "Discard all changes from merge target (other) revision". Of course you should make sure that the target shown as the merge target is really the one you want to throw away before you click the Merge button.