$ git clone -n https://src.fedoraproject.org/rpms/zig.git /var/lib/mock/f38-build-side-42-init-devel-898670-28581/root/chroot_tmpdir/scmroot/zig
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-898670-28581/root/chroot_tmpdir/scmroot/zig'...
$ git fetch origin de9733eb6efb85f987c3b11ca00b678f52038d37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zig
 * [new ref]         de9733eb6efb85f987c3b11ca00b678f52038d37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de9733e Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild