$ git clone -n https://src.fedoraproject.org/rpms/perl-AnyEvent-I3.git /var/lib/mock/f45-build-21670-587/root/chroot_tmpdir/scmroot/perl-AnyEvent-I3
Cloning into '/var/lib/mock/f45-build-21670-587/root/chroot_tmpdir/scmroot/perl-AnyEvent-I3'...
$ git fetch origin 024c00b369c3de10cc29aa9b3e0e6675497976d4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-AnyEvent-I3
 * [new ref]         024c00b369c3de10cc29aa9b3e0e6675497976d4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 024c00b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild