$ git clone -n https://src.fedoraproject.org/rpms/sbcl.git /var/lib/mock/f40-build-763231-122451/root/chroot_tmpdir/scmroot/sbcl
Cloning into '/var/lib/mock/f40-build-763231-122451/root/chroot_tmpdir/scmroot/sbcl'...
$ git fetch origin c792ec5be71c9901e56a61198dc44364dbc3438a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sbcl
 * [new ref]         c792ec5be71c9901e56a61198dc44364dbc3438a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c792ec5 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild