$ git clone -n https://src.fedoraproject.org/rpms/qucs.git /var/lib/mock/f42-build-3406878-45143/root/chroot_tmpdir/scmroot/qucs
Cloning into '/var/lib/mock/f42-build-3406878-45143/root/chroot_tmpdir/scmroot/qucs'...
$ git fetch origin 56d943aad23052bf4774dd501202b7acd87d8d9d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qucs
 * [new ref]         56d943aad23052bf4774dd501202b7acd87d8d9d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 56d943a Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild