I don't think Abiy did that, but if he did, he is finished. If he defeated in border issue, how could he come out victorious on the dam's related issues?
https://sudantribune.com/spip.php?article70344
SUNDAY 17 JANUARY 2021
Sudanese troops have been deployed on the border in agreement with Ethiopia’s PM: al-Burhan
The head of the Sudanese Sovereign Council, Abdel Fattah al-Burhan, disclosed Saturday that he had agreed with the Ethiopian Prime Minister Abiy Ahmed to deploy the Sudanese troops to secure the borders between countries.
On the first of November 2020, days before the attack of the Ethiopian federal army on the TPLF forces in Tigray region, al-Burhan travelled to Ethiopia together with Omer Gamar Eldin the Foreign Minister, Jamal Abdel Majeed the head of the General Intelligence Service, and Yasir Mohamed Osman the head of the Military Intelligence.