$ git clone -n https://src.fedoraproject.org/rpms/rust-rbspy-testdata.git /var/lib/mock/f45-build-44309-812/root/chroot_tmpdir/scmroot/rust-rbspy-testdata
Cloning into '/var/lib/mock/f45-build-44309-812/root/chroot_tmpdir/scmroot/rust-rbspy-testdata'...
$ git fetch origin 346519af83447408af81a82f74d7cce7d71c351e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rbspy-testdata
 * [new ref]         346519af83447408af81a82f74d7cce7d71c351e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 346519a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild