$ git clone -n https://src.fedoraproject.org/rpms/coan.git /var/lib/mock/f45-build-4531-332/root/chroot_tmpdir/scmroot/coan
Cloning into '/var/lib/mock/f45-build-4531-332/root/chroot_tmpdir/scmroot/coan'...
$ git fetch origin 2306f9fcfdeafdd63c5b12a6a354be2affeb2338:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/coan
 * [new ref]         2306f9fcfdeafdd63c5b12a6a354be2affeb2338 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2306f9f drop ix86 support