$ git clone -n https://src.fedoraproject.org/rpms/rust-hmac.git /var/lib/mock/f38-build-side-43-rust-devel-1411931-31436/root/chroot_tmpdir/scmroot/rust-hmac
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1411931-31436/root/chroot_tmpdir/scmroot/rust-hmac'...
$ git fetch origin 4dc9ce26f68e47bd8ee6d24b4788581ea48e074e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-hmac
 * [new ref]         4dc9ce26f68e47bd8ee6d24b4788581ea48e074e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4dc9ce2 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild