$ git clone -n https://src.fedoraproject.org/rpms/python-fastjsonschema.git /var/lib/mock/f39-build-1428271-31650/root/chroot_tmpdir/scmroot/python-fastjsonschema
Cloning into '/var/lib/mock/f39-build-1428271-31650/root/chroot_tmpdir/scmroot/python-fastjsonschema'...
$ git fetch origin cbfb172e63373e77658e7b24ebe4be442a93f1cf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-fastjsonschema
 * [new ref]         cbfb172e63373e77658e7b24ebe4be442a93f1cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cbfb172 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild