$ git clone -n https://src.fedoraproject.org/rpms/perl-Mail-RFC822-Address.git /var/lib/mock/f40-build-2626464-65277/root/chroot_tmpdir/scmroot/perl-Mail-RFC822-Address
Cloning into '/var/lib/mock/f40-build-2626464-65277/root/chroot_tmpdir/scmroot/perl-Mail-RFC822-Address'...
$ git fetch origin b6b1b09dec28256cb6b6b06a90718a75cbda7cdd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Mail-RFC822-Address
 * [new ref]         b6b1b09dec28256cb6b6b06a90718a75cbda7cdd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6b1b09 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild