$ git clone -n https://src.fedoraproject.org/rpms/crontabs.git /var/lib/mock/f40-build-2433033-60683/root/chroot_tmpdir/scmroot/crontabs
Cloning into '/var/lib/mock/f40-build-2433033-60683/root/chroot_tmpdir/scmroot/crontabs'...
$ git fetch origin 427c65fbce3f8ca885f5f22936e6871571d3b84f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crontabs
 * [new ref]         427c65fbce3f8ca885f5f22936e6871571d3b84f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 427c65f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild