$ git clone -n https://src.fedoraproject.org/rpms/libprelude.git /var/lib/mock/f41-build-1021751-18034/root/chroot_tmpdir/scmroot/libprelude
Cloning into '/var/lib/mock/f41-build-1021751-18034/root/chroot_tmpdir/scmroot/libprelude'...
$ git fetch origin 1583931500946e7a4e7327dd6d10945ce8df9e8d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libprelude
 * [new ref]         1583931500946e7a4e7327dd6d10945ce8df9e8d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1583931 Perl 5.40 rebuild