$ git clone -n https://src.fedoraproject.org/rpms/perl-Flickr-Upload.git /var/lib/mock/f41-build-side-1-2800820-32804/root/chroot_tmpdir/scmroot/perl-Flickr-Upload
Cloning into '/var/lib/mock/f41-build-side-1-2800820-32804/root/chroot_tmpdir/scmroot/perl-Flickr-Upload'...
$ git fetch origin 8206e765a25d1853e1294c7110712e9908b25054:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Flickr-Upload
 * [new ref]         8206e765a25d1853e1294c7110712e9908b25054 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8206e76 Orphaned for 6+ weeks