$ git clone -n https://src.fedoraproject.org/rpms/nemo-extensions.git /var/lib/mock/f41-build-side-2-python-2708476-30473/root/chroot_tmpdir/scmroot/nemo-extensions
Cloning into '/var/lib/mock/f41-build-side-2-python-2708476-30473/root/chroot_tmpdir/scmroot/nemo-extensions'...
$ git fetch origin 98d457e0d17d00b36f5459d3f28b3b9e07a7c43e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nemo-extensions
 * [new ref]         98d457e0d17d00b36f5459d3f28b3b9e07a7c43e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 98d457e convert GPLv2+ license to SPDX