$ git clone -n https://src.fedoraproject.org/rpms/rust-lmdb-sys.git /var/lib/mock/f38-build-side-43-rust-devel-1412114-31438/root/chroot_tmpdir/scmroot/rust-lmdb-sys
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1412114-31438/root/chroot_tmpdir/scmroot/rust-lmdb-sys'...
$ git fetch origin 81784a5b1b03c64e7a39fc662883d1b44e4ef598:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-lmdb-sys
 * [new ref]         81784a5b1b03c64e7a39fc662883d1b44e4ef598 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 81784a5 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild