$ git clone -n https://src.fedoraproject.org/rpms/nano.git /var/lib/mock/f45-build-19480-549/root/chroot_tmpdir/scmroot/nano
Cloning into '/var/lib/mock/f45-build-19480-549/root/chroot_tmpdir/scmroot/nano'...
$ git fetch origin 7d05b98e903a710b216bb2f60afd86b69dcc0af7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nano
 * [new ref]         7d05b98e903a710b216bb2f60afd86b69dcc0af7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d05b98 rebase to the latest upstream release