$ git clone -n https://src.fedoraproject.org/rpms/perl-WWW-Curl.git /var/lib/mock/f40-build-779483-130344/root/chroot_tmpdir/scmroot/perl-WWW-Curl
Cloning into '/var/lib/mock/f40-build-779483-130344/root/chroot_tmpdir/scmroot/perl-WWW-Curl'...
$ git fetch origin a5708598e7af93ff2282fbad48af675fea5d55b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-WWW-Curl
 * [new ref]         a5708598e7af93ff2282fbad48af675fea5d55b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a570859 Adapt to new version of gcc