$ git clone -n https://src.fedoraproject.org/rpms/perl-MooX-Singleton.git /var/lib/mock/f45-build-25038-609/root/chroot_tmpdir/scmroot/perl-MooX-Singleton
Cloning into '/var/lib/mock/f45-build-25038-609/root/chroot_tmpdir/scmroot/perl-MooX-Singleton'...
$ git fetch origin 14ca2a7ed2480a1b186237dfac20c9d458373e47:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-MooX-Singleton
 * [new ref]         14ca2a7ed2480a1b186237dfac20c9d458373e47 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 14ca2a7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild