$ git clone -n https://src.fedoraproject.org/rpms/airinv.git /var/lib/mock/f40-build-2208574-52139/root/chroot_tmpdir/scmroot/airinv
Cloning into '/var/lib/mock/f40-build-2208574-52139/root/chroot_tmpdir/scmroot/airinv'...
$ git fetch origin 259869e25dc4ea64b87b691e99788a11a6e636d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/airinv
 * [new ref]         259869e25dc4ea64b87b691e99788a11a6e636d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 259869e Modernized the spec file