$ git clone -n https://src.fedoraproject.org/rpms/perl-namespace-sweep.git /var/lib/mock/f45-build-27716-625/root/chroot_tmpdir/scmroot/perl-namespace-sweep
Cloning into '/var/lib/mock/f45-build-27716-625/root/chroot_tmpdir/scmroot/perl-namespace-sweep'...
$ git fetch origin 9bc4fd64499d916d9e9088ace13855f1362bc26a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-namespace-sweep
 * [new ref]         9bc4fd64499d916d9e9088ace13855f1362bc26a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9bc4fd6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild