$ git clone -n https://src.fedoraproject.org/rpms/dgit.git /var/lib/mock/f40-build-2276569-55168/root/chroot_tmpdir/scmroot/dgit
Cloning into '/var/lib/mock/f40-build-2276569-55168/root/chroot_tmpdir/scmroot/dgit'...
$ git fetch origin 66fa81edd5ff2f8c2497d162586739ae50892d7b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dgit
 * [new ref]         66fa81edd5ff2f8c2497d162586739ae50892d7b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66fa81e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild