$ git clone -n https://src.fedoraproject.org/rpms/perl-CHI.git /var/lib/mock/f45-build-21995-589/root/chroot_tmpdir/scmroot/perl-CHI
Cloning into '/var/lib/mock/f45-build-21995-589/root/chroot_tmpdir/scmroot/perl-CHI'...
$ git fetch origin a1fb1ae745c587f1677bf5bf50d96a6d882ce23a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-CHI
 * [new ref]         a1fb1ae745c587f1677bf5bf50d96a6d882ce23a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a1fb1ae Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild