$ git clone -n https://src.fedoraproject.org/rpms/coin-or-OS.git /var/lib/mock/f40-build-1945578-25181/root/chroot_tmpdir/scmroot/coin-or-OS
Cloning into '/var/lib/mock/f40-build-1945578-25181/root/chroot_tmpdir/scmroot/coin-or-OS'...
$ git fetch origin 2900141fd1f2d706f6c585ec434b6db5551b8c45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/coin-or-OS
 * [new ref]         2900141fd1f2d706f6c585ec434b6db5551b8c45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2900141 Rebuild for soplex 7.0.1