$ git clone -n https://src.fedoraproject.org/rpms/rust-input.git /var/lib/mock/f45-build-42588-795/root/chroot_tmpdir/scmroot/rust-input
Cloning into '/var/lib/mock/f45-build-42588-795/root/chroot_tmpdir/scmroot/rust-input'...
$ git fetch origin c962ad8f150e26a8f12b717890283eb79ea0de8b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-input
 * [new ref]         c962ad8f150e26a8f12b717890283eb79ea0de8b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c962ad8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild