$ git clone -n https://src.fedoraproject.org/rpms/smf-spf.git /var/lib/mock/f45-build-36128-701/root/chroot_tmpdir/scmroot/smf-spf
Cloning into '/var/lib/mock/f45-build-36128-701/root/chroot_tmpdir/scmroot/smf-spf'...
$ git fetch origin d7e2c95ee113bd61e9e08e3fcbc37d745ce05e1c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/smf-spf
 * [new ref]         d7e2c95ee113bd61e9e08e3fcbc37d745ce05e1c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d7e2c95 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild