$ git clone -n https://src.fedoraproject.org/rpms/R-pkgconfig.git /var/lib/mock/f38-build-side-42-init-devel-818016-28339/root/chroot_tmpdir/scmroot/R-pkgconfig
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-818016-28339/root/chroot_tmpdir/scmroot/R-pkgconfig'...
$ git fetch origin f2ac7ac3900c263b66b2ccc52dd1cee39f1ceb06:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-pkgconfig
 * [new ref]         f2ac7ac3900c263b66b2ccc52dd1cee39f1ceb06 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2ac7ac Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild