$ git clone -n https://src.fedoraproject.org/forks/mschorm/rpms/sympa.git /var/lib/mock/f43-build-61074397-6588604/root/chroot_tmpdir/scmroot/sympa
Cloning into '/var/lib/mock/f43-build-61074397-6588604/root/chroot_tmpdir/scmroot/sympa'...
$ git fetch origin 61473691d2c12b003ecc24f9cdf7f957ceddd835:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/forks/mschorm/rpms/sympa
 * [new ref]         61473691d2c12b003ecc24f9cdf7f957ceddd835 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6147369 Disable i686