$ git clone -n https://src.fedoraproject.org/rpms/perl-Array-Utils.git /var/lib/mock/f45-build-21783-588/root/chroot_tmpdir/scmroot/perl-Array-Utils
Cloning into '/var/lib/mock/f45-build-21783-588/root/chroot_tmpdir/scmroot/perl-Array-Utils'...
$ git fetch origin 66d3da9c8b9deb5be172fffe80e1c576d99bad2d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Array-Utils
 * [new ref]         66d3da9c8b9deb5be172fffe80e1c576d99bad2d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66d3da9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild