$ git clone -n https://src.fedoraproject.org/rpms/perl-Flickr-API.git /var/lib/mock/f41-build-side-1-2800821-32804/root/chroot_tmpdir/scmroot/perl-Flickr-API
Cloning into '/var/lib/mock/f41-build-side-1-2800821-32804/root/chroot_tmpdir/scmroot/perl-Flickr-API'...
$ git fetch origin f13522482d4dc6705c736177b6b5760eb2725cf9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Flickr-API
 * [new ref]         f13522482d4dc6705c736177b6b5760eb2725cf9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f135224 Orphaned for 6+ weeks