$ git clone -n https://src.fedoraproject.org/rpms/akonadi-mime.git /var/lib/mock/f42-build-side-1-3562197-46722/root/chroot_tmpdir/scmroot/akonadi-mime
Cloning into '/var/lib/mock/f42-build-side-1-3562197-46722/root/chroot_tmpdir/scmroot/akonadi-mime'...
$ git fetch origin 0526284658af24d735876fdc4f95a531be0d086b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/akonadi-mime
 * [new ref]         0526284658af24d735876fdc4f95a531be0d086b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0526284 25.04.2