$ git clone -n https://src.fedoraproject.org/rpms/perl-Kwiki-ModPerl.git /var/lib/mock/f45-build-24326-603/root/chroot_tmpdir/scmroot/perl-Kwiki-ModPerl
Cloning into '/var/lib/mock/f45-build-24326-603/root/chroot_tmpdir/scmroot/perl-Kwiki-ModPerl'...
$ git fetch origin 4db4d16d4150006f6d3af94690ad86a94889243b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Kwiki-ModPerl
 * [new ref]         4db4d16d4150006f6d3af94690ad86a94889243b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4db4d16 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild