$ git clone -n https://src.fedoraproject.org/rpms/perl-Algorithm-BloomFilter.git /var/lib/mock/f41-build-815817-149783/root/chroot_tmpdir/scmroot/perl-Algorithm-BloomFilter
Cloning into '/var/lib/mock/f41-build-815817-149783/root/chroot_tmpdir/scmroot/perl-Algorithm-BloomFilter'...
$ git fetch origin 9551a1ff345d764134acf0842c9f9922bf115fe8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Algorithm-BloomFilter
 * [new ref]         9551a1ff345d764134acf0842c9f9922bf115fe8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9551a1f Perl 5.40 rebuild