$ git clone -n https://src.fedoraproject.org/rpms/fbreader.git /var/lib/mock/f42-build-885970-187074/root/chroot_tmpdir/scmroot/fbreader
Cloning into '/var/lib/mock/f42-build-885970-187074/root/chroot_tmpdir/scmroot/fbreader'...
$ git fetch origin 99a7f824966541439d4745e0e7b1715e9518d0eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fbreader
 * [new ref]         99a7f824966541439d4745e0e7b1715e9518d0eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99a7f82 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild