$ git clone -n https://src.fedoraproject.org/rpms/rust-env_logger.git /var/lib/mock/f40-build-1971443-25220/root/chroot_tmpdir/scmroot/rust-env_logger
Cloning into '/var/lib/mock/f40-build-1971443-25220/root/chroot_tmpdir/scmroot/rust-env_logger'...
$ git fetch origin fa6d9f7992ba63f41dc3661185726e7ef7b7fd97:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-env_logger
 * [new ref]         fa6d9f7992ba63f41dc3661185726e7ef7b7fd97 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa6d9f7 Include upstream patch to fix invalid code block attributes in docstrings