$ git clone -n https://src.fedoraproject.org/rpms/rust-josekit.git /var/lib/mock/f40-build-2073016-49334/root/chroot_tmpdir/scmroot/rust-josekit
Cloning into '/var/lib/mock/f40-build-2073016-49334/root/chroot_tmpdir/scmroot/rust-josekit'...
$ git fetch origin 1d1139254b805bd50dfc7b833c35984b2ae98f2b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-josekit
 * [new ref]         1d1139254b805bd50dfc7b833c35984b2ae98f2b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1d11392 Regenerate with rust2rpm v24