$ git clone -n https://src.fedoraproject.org/rpms/rust-ron.git /var/lib/mock/f38-build-side-43-rust-devel-1415454-31454/root/chroot_tmpdir/scmroot/rust-ron
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1415454-31454/root/chroot_tmpdir/scmroot/rust-ron'...
$ git fetch origin 674520cf707713dfc771de442207f05b346b8275:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ron
 * [new ref]         674520cf707713dfc771de442207f05b346b8275 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 674520c Skip tests that fail with serde 1.0.181 and newer