$ git clone -n https://src.fedoraproject.org/rpms/rust-memmap.git /var/lib/mock/f38-build-side-43-rust-devel-1416808-31457/root/chroot_tmpdir/scmroot/rust-memmap
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1416808-31457/root/chroot_tmpdir/scmroot/rust-memmap'...
$ git fetch origin f983b0a49a2d9ad24ba5a54b3a0608963c98bc46:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-memmap
 * [new ref]         f983b0a49a2d9ad24ba5a54b3a0608963c98bc46 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f983b0a Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild