$ git clone -n https://src.fedoraproject.org/rpms/perl-IO-Compress-Brotli.git /var/lib/mock/f41-build-766321-13472/root/chroot_tmpdir/scmroot/perl-IO-Compress-Brotli
Cloning into '/var/lib/mock/f41-build-766321-13472/root/chroot_tmpdir/scmroot/perl-IO-Compress-Brotli'...
$ git fetch origin 538ca92ae7577334fdee6c9b193623065bc2f39e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-IO-Compress-Brotli
 * [new ref]         538ca92ae7577334fdee6c9b193623065bc2f39e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 538ca92 Eliminate use of obsolete %patchN syntax (#2283636)