$ git clone -n https://src.fedoraproject.org/rpms/open-sendmail.git /var/lib/mock/f40-build-2617885-64467/root/chroot_tmpdir/scmroot/open-sendmail
Cloning into '/var/lib/mock/f40-build-2617885-64467/root/chroot_tmpdir/scmroot/open-sendmail'...
$ git fetch origin 762e45b984d1641607e45505b4e090ffad9eae40:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/open-sendmail
 * [new ref]         762e45b984d1641607e45505b4e090ffad9eae40 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 762e45b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild