$ git clone -n https://src.fedoraproject.org/rpms/rust-bitstream-io.git /var/lib/mock/f39-build-1444879-32640/root/chroot_tmpdir/scmroot/rust-bitstream-io
Cloning into '/var/lib/mock/f39-build-1444879-32640/root/chroot_tmpdir/scmroot/rust-bitstream-io'...
$ git fetch origin eaeb5842080692325cb68a5e4b1c8d6b8c2a4d13:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bitstream-io
 * [new ref]         eaeb5842080692325cb68a5e4b1c8d6b8c2a4d13 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eaeb584 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild