$ git clone -n https://src.fedoraproject.org/rpms/perl-Array-Compare.git /var/lib/mock/f45-build-21794-588/root/chroot_tmpdir/scmroot/perl-Array-Compare
Cloning into '/var/lib/mock/f45-build-21794-588/root/chroot_tmpdir/scmroot/perl-Array-Compare'...
$ git fetch origin 7f50e5c1d78f0fb57f27117b576872cc12feb50a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Array-Compare
 * [new ref]         7f50e5c1d78f0fb57f27117b576872cc12feb50a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f50e5c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild