$ git clone -n https://src.fedoraproject.org/rpms/rust-ena.git /var/lib/mock/f45-build-41424-782/root/chroot_tmpdir/scmroot/rust-ena
Cloning into '/var/lib/mock/f45-build-41424-782/root/chroot_tmpdir/scmroot/rust-ena'...
$ git fetch origin c359d232d0a1e8540b4be50f93636102b8ba0a70:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ena
 * [new ref]         c359d232d0a1e8540b4be50f93636102b8ba0a70 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c359d23 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild