What we see
The sourced claim is that forces "entered" the city and that residents saw soldiers "on patrol" and militia "walking" its streets. No source we hold states that the town is secured, that fighting nearby has stopped, or that the force that entered is large enough to hold it.
What it is consistent with
This sequence — presence reported, strikes reported, withdrawal reported, re-entry reported, all within four days and all in the same small town — is a town changing hands under contest, not a settled front line. Treat any claim that Adigrat is now secure as a separate, unassessed proposition.