$ git clone -n https://src.fedoraproject.org/rpms/python-json5.git /var/lib/mock/f38-build-side-42-init-devel-760666-27698/root/chroot_tmpdir/scmroot/python-json5
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-760666-27698/root/chroot_tmpdir/scmroot/python-json5'...
$ git fetch origin 0fc87c3fd8757391e9203bca6542699880f17b2f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-json5
 * [new ref]         0fc87c3fd8757391e9203bca6542699880f17b2f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0fc87c3 Update to latest upstream release 0.9.12