rug-compling/alpinocorpus — comment on commit 3142bdc0c8747271747e4ddcf8e493a42770797b
File:  line 0
By danieldk:

It's merging two diverging 'master' histories.

Don't be deceived by Github's presentation, it's not actually committing the same thing again. E.g. if you launch gitk, you see that the commit doesn't actually add anything, but combines two histories (those with 26d44 and 5c41b as their heads).