$ git clone -n https://src.fedoraproject.org/rpms/rubygem-rspec-pending_for.git /var/lib/mock/f45-build-35237-694/root/chroot_tmpdir/scmroot/rubygem-rspec-pending_for
Cloning into '/var/lib/mock/f45-build-35237-694/root/chroot_tmpdir/scmroot/rubygem-rspec-pending_for'...
$ git fetch origin cd2d6fa0a54da3bb2230d0982ab72e9794f740a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-rspec-pending_for
 * [new ref]         cd2d6fa0a54da3bb2230d0982ab72e9794f740a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd2d6fa Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild