$ git clone -n https://src.fedoraproject.org/rpms/rust-lopdf.git /var/lib/mock/f40-build-2073162-49350/root/chroot_tmpdir/scmroot/rust-lopdf
Cloning into '/var/lib/mock/f40-build-2073162-49350/root/chroot_tmpdir/scmroot/rust-lopdf'...
$ git fetch origin bae94f5ae80a3eeaaf62d51792c7b45d5317d015:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-lopdf
 * [new ref]         bae94f5ae80a3eeaaf62d51792c7b45d5317d015 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bae94f5 Update to 0.31.0