$ git clone -n https://src.fedoraproject.org/rpms/rubygem-rack-accept.git /var/lib/mock/f40-build-2323285-58705/root/chroot_tmpdir/scmroot/rubygem-rack-accept
Cloning into '/var/lib/mock/f40-build-2323285-58705/root/chroot_tmpdir/scmroot/rubygem-rack-accept'...
$ git fetch origin 3b548a0d2a9170ab1e5c55faaa1971ba0d0eca11:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-rack-accept
 * [new ref]         3b548a0d2a9170ab1e5c55faaa1971ba0d0eca11 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b548a0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild