$ git clone -n https://src.fedoraproject.org/rpms/rust-yansi.git /var/lib/mock/f45-build-46268-832/root/chroot_tmpdir/scmroot/rust-yansi
Cloning into '/var/lib/mock/f45-build-46268-832/root/chroot_tmpdir/scmroot/rust-yansi'...
$ git fetch origin 8af17c475738d9917465752fe1e331c76ba10a96:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-yansi
 * [new ref]         8af17c475738d9917465752fe1e331c76ba10a96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8af17c4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild