$ git clone -n https://src.fedoraproject.org/rpms/rubygem-ensure_valid_encoding.git /var/lib/mock/f40-build-2322644-58673/root/chroot_tmpdir/scmroot/rubygem-ensure_valid_encoding
Cloning into '/var/lib/mock/f40-build-2322644-58673/root/chroot_tmpdir/scmroot/rubygem-ensure_valid_encoding'...
$ git fetch origin c9ac23f570c5c9825519f5fd6a6b2c331b9ed7d6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-ensure_valid_encoding
 * [new ref]         c9ac23f570c5c9825519f5fd6a6b2c331b9ed7d6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c9ac23f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild