$ git clone -n https://src.fedoraproject.org/rpms/ngspice.git /var/lib/mock/f40-build-1926244-25107/root/chroot_tmpdir/scmroot/ngspice
Cloning into '/var/lib/mock/f40-build-1926244-25107/root/chroot_tmpdir/scmroot/ngspice'...
$ git fetch origin f1b82bc108e01700896b17106622caa31a9d2faa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ngspice
 * [new ref]         f1b82bc108e01700896b17106622caa31a9d2faa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f1b82bc Apply upstream patch for fixing one byte ahead access in string manipulation