$ git clone -n https://src.fedoraproject.org/rpms/perl-Format-Human-Bytes.git /var/lib/mock/f41-build-1099083-20020/root/chroot_tmpdir/scmroot/perl-Format-Human-Bytes
Cloning into '/var/lib/mock/f41-build-1099083-20020/root/chroot_tmpdir/scmroot/perl-Format-Human-Bytes'...
$ git fetch origin d918ae7a44d93723dadb3ecb8a23400f72721471:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Format-Human-Bytes
 * [new ref]         d918ae7a44d93723dadb3ecb8a23400f72721471 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d918ae7 Eliminate use of obsolete %patchN syntax (#2283636)