$ git clone -n https://src.fedoraproject.org/rpms/dovecot.git /var/lib/mock/f40-build-2344892-59943/root/chroot_tmpdir/scmroot/dovecot
Cloning into '/var/lib/mock/f40-build-2344892-59943/root/chroot_tmpdir/scmroot/dovecot'...
$ git fetch origin 010a512bd0731e160012a49cd297778485c4b3d8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dovecot
 * [new ref]         010a512bd0731e160012a49cd297778485c4b3d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 010a512 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild