Commit e48977e fixes a regression that was introduced with commit 7c594a2 a couple of days ago. Basically the fsck.ext[234] programs embedded in the initrd would be broken, leading to an exception from the initrd and to a REPL (which could just be left with “,q” to continue booting.)
In related news, commit 4ad2e76 fixes a regression in the Emacs interface introduced a day or two ago. Ludo’.