This is a terrible hack. If you are easily offended by bad ideas implemented poorly, move along!

You are working on a wonderful open source project...but you are not supposed to be working on that project! You're supposed to be doing your real work! Unfortunately, your extra-curricular activity is well documented in the git history of your project for all to see:

Heatmap of original commit history

And now your boss knows why the TPS reports are late. You need workinghours, a terrible utility for doing awful things to your repository history. Workinghours will programatically time shift your git commits so that they appear to have happened within specified time intervals (for example, "between 7PM and midnight").

Running workinghours on your repository makes things better:

workinghours --afterhours | workinghours-apply

And now you have:

Heatmap of modified commit history

But that looks suspicious. What are you, some kind of machine? Fortunately, workinghours has a --drift option that will introduce some variety into your start and end times. The syntax is --drift P before after, where for each commit workinghours will with probability P extend the beginning of the time interval by a random amount between 0 and before hours, and the end of the time interval by a random amount between 0 and after hours.

Introducing a low probability drift to the beginning of the interval:

workinghours --afterhours -d 0.2 8 2 | workinghours-apply

Gives us:

Heatmap of modified commit history

Congratulations, you are a model employee.