$ git clone -n https://src.fedoraproject.org/rpms/rust-object.git /var/lib/mock/f39-build-2160210-50943/root/chroot_tmpdir/scmroot/rust-object
Cloning into '/var/lib/mock/f39-build-2160210-50943/root/chroot_tmpdir/scmroot/rust-object'...
$ git fetch origin ee80ba58c0c88758b98fb3f9c6f7b4fadb82b493:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-object
 * [new ref]         ee80ba58c0c88758b98fb3f9c6f7b4fadb82b493 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee80ba5 Update to version 0.32.2; Fixes RHBZ#2255736