$ git clone -n http://git.inferitos.ru/rpms/rust-rustc-serialize.git /var/lib/mock/inferit-9-epel-build-24953-42951/root/chroot_tmpdir/scmroot/rust-rustc-serialize
Cloning into '/var/lib/mock/inferit-9-epel-build-24953-42951/root/chroot_tmpdir/scmroot/rust-rustc-serialize'...
$ git fetch origin fbe823a:KOJI_FETCH_HEAD
fatal: couldn't find remote ref fbe823a
$ git reset --hard fbe823a
HEAD is now at fbe823a import rust-rustc-serialize-0.3.24-16.el9