$ git clone -n https://src.fedoraproject.org/rpms/mcrouter.git /var/lib/mock/f38-build-side-42-init-devel-707281-27190/root/chroot_tmpdir/scmroot/mcrouter
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-707281-27190/root/chroot_tmpdir/scmroot/mcrouter'...
$ git fetch origin 0cf9440b54bc261f3468ebfd82052910edb04ef9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mcrouter
 * [new ref]         0cf9440b54bc261f3468ebfd82052910edb04ef9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0cf9440 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild