$ git clone -n https://src.fedoraproject.org/rpms/simde.git /var/lib/mock/f41-build-side-1-2669922-28987/root/chroot_tmpdir/scmroot/simde
Cloning into '/var/lib/mock/f41-build-side-1-2669922-28987/root/chroot_tmpdir/scmroot/simde'...
$ git fetch origin 67e80ca88255aab303cab95bbbada786ef9b2a6f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/simde
 * [new ref]         67e80ca88255aab303cab95bbbada786ef9b2a6f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 67e80ca fix broken reference to %%{SOURCE1}