$ git clone -n https://src.fedoraproject.org/rpms/apache-commons-jxpath.git /var/lib/mock/f41-build-1259834-23039/root/chroot_tmpdir/scmroot/apache-commons-jxpath
Cloning into '/var/lib/mock/f41-build-1259834-23039/root/chroot_tmpdir/scmroot/apache-commons-jxpath'...
$ git fetch origin dd560c9bf87e91e6c7ad68b6ee4dcf5d7daf66fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/apache-commons-jxpath
 * [new ref]         dd560c9bf87e91e6c7ad68b6ee4dcf5d7daf66fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd560c9 Switch to a newer %patch syntax