$ git clone -n https://src.fedoraproject.org/rpms/x11-ssh-askpass.git /var/lib/mock/f45-build-38540-725/root/chroot_tmpdir/scmroot/x11-ssh-askpass
Cloning into '/var/lib/mock/f45-build-38540-725/root/chroot_tmpdir/scmroot/x11-ssh-askpass'...
$ git fetch origin 5e8961c804f2c176bcc91043ad010e42ca839e87:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/x11-ssh-askpass
 * [new ref]         5e8961c804f2c176bcc91043ad010e42ca839e87 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5e8961c ExcludeArch: %{ix86}