$ git clone -n https://src.fedoraproject.org/rpms/codehaus-parent.git /var/lib/mock/f41-build-830511-14807/root/chroot_tmpdir/scmroot/codehaus-parent
Cloning into '/var/lib/mock/f41-build-830511-14807/root/chroot_tmpdir/scmroot/codehaus-parent'...
$ git fetch origin 1b97f4711adb527e59647cb45d838656094e8744:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/codehaus-parent
 * [new ref]         1b97f4711adb527e59647cb45d838656094e8744 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b97f47 Eliminate use of obsolete %patchN syntax (#2283636)