$ git clone -n https://src.fedoraproject.org/rpms/perl-HTTP-Tiny.git /var/lib/mock/f41-build-816879-150476/root/chroot_tmpdir/scmroot/perl-HTTP-Tiny
Cloning into '/var/lib/mock/f41-build-816879-150476/root/chroot_tmpdir/scmroot/perl-HTTP-Tiny'...
$ git fetch origin be9f1761e7aefa868b5609d607dec226de60e8f4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-HTTP-Tiny
 * [new ref]         be9f1761e7aefa868b5609d607dec226de60e8f4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be9f176 Perl 5.40 re-rebuild of bootstrapped packages