$ git clone -n https://src.fedoraproject.org/rpms/biosig4c++.git /var/lib/mock/f42-build-882026-184129/root/chroot_tmpdir/scmroot/biosig4c++
Cloning into '/var/lib/mock/f42-build-882026-184129/root/chroot_tmpdir/scmroot/biosig4c++'...
$ git fetch origin bf617d6ce44cbd20121e95c9925aa22cdb3f159e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/biosig4c++
 * [new ref]         bf617d6ce44cbd20121e95c9925aa22cdb3f159e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bf617d6 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild