$ git clone -n https://src.fedoraproject.org/rpms/arbor.git /var/lib/mock/f41-build-755854-13415/root/chroot_tmpdir/scmroot/arbor
Cloning into '/var/lib/mock/f41-build-755854-13415/root/chroot_tmpdir/scmroot/arbor'...
$ git fetch origin 6ebc987a02bffba639fe79239c934ac9ea86aca9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arbor
 * [new ref]         6ebc987a02bffba639fe79239c934ac9ea86aca9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ebc987 Fix missing includes