$ git clone -n https://src.fedoraproject.org/rpms/perl-Scalar-Util-LooksLikeNumber.git /var/lib/mock/f43-perl-60949975-6586679/root/chroot_tmpdir/scmroot/perl-Scalar-Util-LooksLikeNumber
Cloning into '/var/lib/mock/f43-perl-60949975-6586679/root/chroot_tmpdir/scmroot/perl-Scalar-Util-LooksLikeNumber'...
$ git fetch origin 31828febba048049f217dd08da96bf49bb92f8bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Scalar-Util-LooksLikeNumber
 * [new ref]         31828febba048049f217dd08da96bf49bb92f8bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 31828fe Perl 5.42 rebuild