$ git clone -n https://src.fedoraproject.org/rpms/librx.git /var/lib/mock/f38-build-side-42-init-devel-1144257-30457/root/chroot_tmpdir/scmroot/librx
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1144257-30457/root/chroot_tmpdir/scmroot/librx'...
$ git fetch origin ba2947e6790c6e74c58f213f0f1ad7fd2815f032:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/librx
 * [new ref]         ba2947e6790c6e74c58f213f0f1ad7fd2815f032 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba2947e Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild