$ git clone -n https://src.fedoraproject.org/rpms/perl-Text-Iconv.git /var/lib/mock/f45-build-27019-620/root/chroot_tmpdir/scmroot/perl-Text-Iconv
Cloning into '/var/lib/mock/f45-build-27019-620/root/chroot_tmpdir/scmroot/perl-Text-Iconv'...
$ git fetch origin 296b7c35a896e9005856825ba5af23ccffd46e4e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Text-Iconv
 * [new ref]         296b7c35a896e9005856825ba5af23ccffd46e4e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 296b7c3 Perl 5.44 rebuild