$ git clone -n https://src.fedoraproject.org/rpms/rust-precomputed-hash.git /var/lib/mock/f38-build-side-43-rust-devel-1415847-31455/root/chroot_tmpdir/scmroot/rust-precomputed-hash
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1415847-31455/root/chroot_tmpdir/scmroot/rust-precomputed-hash'...
$ git fetch origin 7899c7639340177057d4d767ad1831bfbfb48507:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-precomputed-hash
 * [new ref]         7899c7639340177057d4d767ad1831bfbfb48507 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7899c76 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild