$ git clone -n https://src.fedoraproject.org/rpms/perl-String-Approx.git /var/lib/mock/f45-build-26268-616/root/chroot_tmpdir/scmroot/perl-String-Approx
Cloning into '/var/lib/mock/f45-build-26268-616/root/chroot_tmpdir/scmroot/perl-String-Approx'...
$ git fetch origin 5528ea571122d89bcac34f2bc59e66e96d7bf4b3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-String-Approx
 * [new ref]         5528ea571122d89bcac34f2bc59e66e96d7bf4b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5528ea5 Perl 5.44 rebuild