$ git clone -n https://src.fedoraproject.org/rpms/rust-unicode-truncate.git /var/lib/mock/f38-build-side-43-rust-devel-1415958-31457/root/chroot_tmpdir/scmroot/rust-unicode-truncate
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1415958-31457/root/chroot_tmpdir/scmroot/rust-unicode-truncate'...
$ git fetch origin 508347b1ebe6e0a605cfe4a14927742ec0d1ef03:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unicode-truncate
 * [new ref]         508347b1ebe6e0a605cfe4a14927742ec0d1ef03 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 508347b Regenerate with rust2rpm v24