$ git clone -n https://src.fedoraproject.org/rpms/rust-rustc-serialize.git /var/lib/mock/f37-build-side-31-rust-devel-120209-6606/root/chroot_tmpdir/scmroot/rust-rustc-serialize
Cloning into '/var/lib/mock/f37-build-side-31-rust-devel-120209-6606/root/chroot_tmpdir/scmroot/rust-rustc-serialize'...
$ git reset --hard 126738e7763ad4c7ff1618faa643d44683d8159a
HEAD is now at 126738e Rebuilt for https://fedoraproject.org/wiki/Fedora_37_Mass_Rebuild