$ git clone -n https://src.fedoraproject.org/rpms/golang-github-pkg-xattr.git /var/lib/mock/f38-build-side-42-init-devel-998238-29141/root/chroot_tmpdir/scmroot/golang-github-pkg-xattr
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-998238-29141/root/chroot_tmpdir/scmroot/golang-github-pkg-xattr'...
$ git fetch origin 9c690e703e3fcf6c51b01d2a3bccab16917994d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-pkg-xattr
 * [new ref]         9c690e703e3fcf6c51b01d2a3bccab16917994d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c690e7 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild