$ git clone -n https://src.fedoraproject.org/rpms/rust-quantiles.git /var/lib/mock/f45-build-44180-811/root/chroot_tmpdir/scmroot/rust-quantiles
Cloning into '/var/lib/mock/f45-build-44180-811/root/chroot_tmpdir/scmroot/rust-quantiles'...
$ git fetch origin 2b3fe7af22a83ba6e04a056106b2561478717da8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-quantiles
 * [new ref]         2b3fe7af22a83ba6e04a056106b2561478717da8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2b3fe7a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild