$ git clone -n https://src.fedoraproject.org/rpms/rust-rand_distr.git /var/lib/mock/f45-build-44246-811/root/chroot_tmpdir/scmroot/rust-rand_distr
Cloning into '/var/lib/mock/f45-build-44246-811/root/chroot_tmpdir/scmroot/rust-rand_distr'...
$ git fetch origin 8b41e852d012caf5ea2144d480add8ecbd445fd5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rand_distr
 * [new ref]         8b41e852d012caf5ea2144d480add8ecbd445fd5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b41e85 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild