$ git clone -n https://src.fedoraproject.org/rpms/ppc64-diag.git /var/lib/mock/f42-build-3360742-45036/root/chroot_tmpdir/scmroot/ppc64-diag
Cloning into '/var/lib/mock/f42-build-3360742-45036/root/chroot_tmpdir/scmroot/ppc64-diag'...
$ git fetch origin 11e866ae6d05f2722120256a2381ee506bf22786:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ppc64-diag
 * [new ref]         11e866ae6d05f2722120256a2381ee506bf22786 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 11e866a Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild