$ git clone -n https://src.fedoraproject.org/rpms/rust-oid.git /var/lib/mock/f39-build-1624757-39093/root/chroot_tmpdir/scmroot/rust-oid
Cloning into '/var/lib/mock/f39-build-1624757-39093/root/chroot_tmpdir/scmroot/rust-oid'...
$ git fetch origin eb97e2bf01e17beb1d29d09d529220f8972a12b3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-oid
 * [new ref]         eb97e2bf01e17beb1d29d09d529220f8972a12b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eb97e2b Regenerate with rust2rpm v24