$ git clone -n https://src.fedoraproject.org/rpms/perl-Array-Compare.git /var/lib/mock/f39-build-1438359-32200/root/chroot_tmpdir/scmroot/perl-Array-Compare
Cloning into '/var/lib/mock/f39-build-1438359-32200/root/chroot_tmpdir/scmroot/perl-Array-Compare'...
$ git fetch origin 1b7c224107a295e6f780e7a1a45491983062305d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Array-Compare
 * [new ref]         1b7c224107a295e6f780e7a1a45491983062305d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b7c224 Update to 4.0.0