$ git clone -n https://src.fedoraproject.org/rpms/crosswords.git /var/lib/mock/f40-build-2271880-54899/root/chroot_tmpdir/scmroot/crosswords
Cloning into '/var/lib/mock/f40-build-2271880-54899/root/chroot_tmpdir/scmroot/crosswords'...
$ git fetch origin 8cc645c724e612ddc7bf2b4b7017969814007fe8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crosswords
 * [new ref]         8cc645c724e612ddc7bf2b4b7017969814007fe8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8cc645c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild