$ git clone -n https://src.fedoraproject.org/rpms/perl-Syntax-Operator-In.git /var/lib/mock/f41-build-side-1-2781851-32532/root/chroot_tmpdir/scmroot/perl-Syntax-Operator-In
Cloning into '/var/lib/mock/f41-build-side-1-2781851-32532/root/chroot_tmpdir/scmroot/perl-Syntax-Operator-In'...
$ git fetch origin 61b56e60067b513d6fd80ca33232a88b055b33b3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Syntax-Operator-In
 * [new ref]         61b56e60067b513d6fd80ca33232a88b055b33b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 61b56e6 0.10 bump