$ git clone -n https://src.fedoraproject.org/rpms/perl-Wiki-Toolkit.git /var/lib/mock/f45-build-27416-624/root/chroot_tmpdir/scmroot/perl-Wiki-Toolkit
Cloning into '/var/lib/mock/f45-build-27416-624/root/chroot_tmpdir/scmroot/perl-Wiki-Toolkit'...
$ git fetch origin a84acee471e9b301923302aae917164869047e81:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Wiki-Toolkit
 * [new ref]         a84acee471e9b301923302aae917164869047e81 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a84acee Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild