Whats my userid when I come from Helmholtz AAI

Hello, I try to move a gitlab project from coastgit.hzg.de.

I tried several userid but I always get:

git push -u origin --all Username for 'https://gitlab.hzdr.de': gisbert.breitbach Password for 'https://gisbert.breitbach@gitlab.hzdr.de': remote: HTTP Basic: Access denied fatal: Authentication failed for 'https://gitlab.hzdr.de/gisbert.breitbach/gn4.git/'

komc02:gn4 breitbac$ git push -u origin --all Username for 'https://gitlab.hzdr.de': breitbac@hereon.de Password for 'https://breitbac@hereon.de@gitlab.hzdr.de': remote: HTTP Basic: Access denied fatal: Authentication failed for 'https://gitlab.hzdr.de/gisbert.breitbach/gn4.git/'

Please tell me which userid I should enter.

Thanks, Gisbert