$ git clone -n https://src.fedoraproject.org/rpms/bcal.git /var/lib/mock/f38-build-side-42-init-devel-1104251-30073/root/chroot_tmpdir/scmroot/bcal
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1104251-30073/root/chroot_tmpdir/scmroot/bcal'...
$ git fetch origin 68a46f6ad85e101ccb16ea451fcc9ceacc8c115e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bcal
 * [new ref]         68a46f6ad85e101ccb16ea451fcc9ceacc8c115e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68a46f6 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild