$ git clone -n https://src.fedoraproject.org/rpms/sbc.git /var/lib/mock/f40-build-746569-112722/root/chroot_tmpdir/scmroot/sbc
Cloning into '/var/lib/mock/f40-build-746569-112722/root/chroot_tmpdir/scmroot/sbc'...
$ git fetch origin 63b28864fecc2517dfd7f4d8a0cf09de47cf6e38:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sbc
 * [new ref]         63b28864fecc2517dfd7f4d8a0cf09de47cf6e38 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63b2886 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild