$ git clone -n https://src.fedoraproject.org/rpms/nemo-extensions.git /var/lib/mock/f41-build-815190-149424/root/chroot_tmpdir/scmroot/nemo-extensions
Cloning into '/var/lib/mock/f41-build-815190-149424/root/chroot_tmpdir/scmroot/nemo-extensions'...
$ git fetch origin fabdb315eda526ed7216f3546aea208b65f17b71:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nemo-extensions
 * [new ref]         fabdb315eda526ed7216f3546aea208b65f17b71 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fabdb31 Update to 6.2.0