$ git clone -n https://src.fedoraproject.org/rpms/R-lobstr.git /var/lib/mock/f38-build-side-42-init-devel-933482-28750/root/chroot_tmpdir/scmroot/R-lobstr
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-933482-28750/root/chroot_tmpdir/scmroot/R-lobstr'...
$ git fetch origin 1204f13488404cb4f77000aa35a1a32756dacf4b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-lobstr
 * [new ref]         1204f13488404cb4f77000aa35a1a32756dacf4b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1204f13 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild