$ git clone -n https://src.fedoraproject.org/rpms/rubygem-regexp_property_values.git /var/lib/mock/f45-build-35258-694/root/chroot_tmpdir/scmroot/rubygem-regexp_property_values
Cloning into '/var/lib/mock/f45-build-35258-694/root/chroot_tmpdir/scmroot/rubygem-regexp_property_values'...
$ git fetch origin f15c460857ef326badfd7673583088369b479f3a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-regexp_property_values
 * [new ref]         f15c460857ef326badfd7673583088369b479f3a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f15c460 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild