$ git clone -n https://src.fedoraproject.org/rpms/arbor.git /var/lib/mock/f38-build-side-42-init-devel-1094528-30068/root/chroot_tmpdir/scmroot/arbor
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1094528-30068/root/chroot_tmpdir/scmroot/arbor'...
$ git fetch origin f6ca2c9dba54a87eac47e11fc97a829e4ec20d28:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arbor
 * [new ref]         f6ca2c9dba54a87eac47e11fc97a829e4ec20d28 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6ca2c9 Add some missing #include directives