$ git clone -n https://src.fedoraproject.org/rpms/perl-HTML-Tagset.git /var/lib/mock/f40-build-2239196-53605/root/chroot_tmpdir/scmroot/perl-HTML-Tagset
Cloning into '/var/lib/mock/f40-build-2239196-53605/root/chroot_tmpdir/scmroot/perl-HTML-Tagset'...
$ git fetch origin c82bd0144168c24c53e9c339d958daba9a8df61e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-HTML-Tagset
 * [new ref]         c82bd0144168c24c53e9c339d958daba9a8df61e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c82bd01 Package tests; Modernize spec