$ git clone -n https://src.fedoraproject.org/rpms/coin-or-Cgl.git /var/lib/mock/f42-build-864999-172742/root/chroot_tmpdir/scmroot/coin-or-Cgl
Cloning into '/var/lib/mock/f42-build-864999-172742/root/chroot_tmpdir/scmroot/coin-or-Cgl'...
$ git fetch origin 3ad21e53711144a335a18ae99bdaea52d6531863:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/coin-or-Cgl
 * [new ref]         3ad21e53711144a335a18ae99bdaea52d6531863 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ad21e5 Rebuild for MUMPS-5.7.3