$ git clone -n https://src.fedoraproject.org/rpms/coin-or-Vol.git /var/lib/mock/f45-build-4353-331/root/chroot_tmpdir/scmroot/coin-or-Vol
Cloning into '/var/lib/mock/f45-build-4353-331/root/chroot_tmpdir/scmroot/coin-or-Vol'...
$ git fetch origin 16c2ef4fff5ad7c1860db6e3477bcb84e2a2bf7f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/coin-or-Vol
 * [new ref]         16c2ef4fff5ad7c1860db6e3477bcb84e2a2bf7f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 16c2ef4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild