$ git clone -n https://src.fedoraproject.org/rpms/AusweisApp2.git /var/lib/mock/f40-build-1930406-25111/root/chroot_tmpdir/scmroot/AusweisApp2
Cloning into '/var/lib/mock/f40-build-1930406-25111/root/chroot_tmpdir/scmroot/AusweisApp2'...
$ git fetch origin aa9e556c54a78afd5006534cd85ba06fd3762b14:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/AusweisApp2
 * [new ref]         aa9e556c54a78afd5006534cd85ba06fd3762b14 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa9e556 Merge branch 'rawhide' into f40