$ git clone -n https://src.fedoraproject.org/rpms/magicmirror.git /var/lib/mock/f40-build-1723591-24647/root/chroot_tmpdir/scmroot/magicmirror
Cloning into '/var/lib/mock/f40-build-1723591-24647/root/chroot_tmpdir/scmroot/magicmirror'...
$ git fetch origin ace2e99a80caaecf54352bccd8f5c84626e508e5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/magicmirror
 * [new ref]         ace2e99a80caaecf54352bccd8f5c84626e508e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ace2e99 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild