$ git clone -n https://src.fedoraproject.org/rpms/rubygem-sass.git /var/lib/mock/f39-build-1682904-41048/root/chroot_tmpdir/scmroot/rubygem-sass
Cloning into '/var/lib/mock/f39-build-1682904-41048/root/chroot_tmpdir/scmroot/rubygem-sass'...
$ git fetch origin 254dc6f8ed45aa76943561fe0afa6a4ead57fd1a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-sass
 * [new ref]         254dc6f8ed45aa76943561fe0afa6a4ead57fd1a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 254dc6f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild