$ git clone -n https://src.fedoraproject.org/rpms/nmstate.git /var/lib/mock/f40-build-806508-145131/root/chroot_tmpdir/scmroot/nmstate
Cloning into '/var/lib/mock/f40-build-806508-145131/root/chroot_tmpdir/scmroot/nmstate'...
$ git fetch origin a66dfbca3c054cf9b45b829ef4abfb60e5365d4d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nmstate
 * [new ref]         a66dfbca3c054cf9b45b829ef4abfb60e5365d4d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a66dfbc Fix cargo vendor license file