$ git clone -n https://src.fedoraproject.org/rpms/rubygem-rubyzip.git /var/lib/mock/f45-build-35276-694/root/chroot_tmpdir/scmroot/rubygem-rubyzip
Cloning into '/var/lib/mock/f45-build-35276-694/root/chroot_tmpdir/scmroot/rubygem-rubyzip'...
$ git fetch origin 0604ecb1b6340472335f0b5989e5feae03f7267e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-rubyzip
 * [new ref]         0604ecb1b6340472335f0b5989e5feae03f7267e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0604ecb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild