$ git clone -n https://src.fedoraproject.org/rpms/perl-String-Approx.git /var/lib/mock/f41-build-815999-149918/root/chroot_tmpdir/scmroot/perl-String-Approx
Cloning into '/var/lib/mock/f41-build-815999-149918/root/chroot_tmpdir/scmroot/perl-String-Approx'...
$ git fetch origin 82cd7a72c1a2814364b12e9ec5b68d30d2a5a54d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-String-Approx
 * [new ref]         82cd7a72c1a2814364b12e9ec5b68d30d2a5a54d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 82cd7a7 Perl 5.40 rebuild