$ git clone -n https://src.fedoraproject.org/rpms/grep.git /var/lib/mock/f40-build-2290064-55943/root/chroot_tmpdir/scmroot/grep
Cloning into '/var/lib/mock/f40-build-2290064-55943/root/chroot_tmpdir/scmroot/grep'...
$ git fetch origin 22c850bbbc4cff832064251b9ccd924493877087:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/grep
 * [new ref]         22c850bbbc4cff832064251b9ccd924493877087 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22c850b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild