$ git clone -n https://src.fedoraproject.org/rpms/perl-HTML-Defang.git /var/lib/mock/f45-build-23850-599/root/chroot_tmpdir/scmroot/perl-HTML-Defang
Cloning into '/var/lib/mock/f45-build-23850-599/root/chroot_tmpdir/scmroot/perl-HTML-Defang'...
$ git fetch origin 647d484fd568aa47e9a7ec17a8eed1668c7fd3f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-HTML-Defang
 * [new ref]         647d484fd568aa47e9a7ec17a8eed1668c7fd3f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 647d484 Update to 1.09