$ git clone -n https://src.fedoraproject.org/rpms/rubygem-rdiscount.git /var/lib/mock/f41-build-819846-151939/root/chroot_tmpdir/scmroot/rubygem-rdiscount
Cloning into '/var/lib/mock/f41-build-819846-151939/root/chroot_tmpdir/scmroot/rubygem-rdiscount'...
$ git fetch origin 410ee21abc895ec16f47246e6f9e0530443b5530:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-rdiscount
 * [new ref]         410ee21abc895ec16f47246e6f9e0530443b5530 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 410ee21 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild