$ git clone -n https://src.fedoraproject.org/rpms/sndfile-tools.git /var/lib/mock/f45-build-36156-701/root/chroot_tmpdir/scmroot/sndfile-tools
Cloning into '/var/lib/mock/f45-build-36156-701/root/chroot_tmpdir/scmroot/sndfile-tools'...
$ git fetch origin 7a7864d32860920287fc97e9d62c340252b3484e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sndfile-tools
 * [new ref]         7a7864d32860920287fc97e9d62c340252b3484e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7a7864d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild