$ git clone -n https://src.fedoraproject.org/rpms/perl-Log-Report.git /var/lib/mock/f40-build-59018728-6570255/root/chroot_tmpdir/scmroot/perl-Log-Report
Cloning into '/var/lib/mock/f40-build-59018728-6570255/root/chroot_tmpdir/scmroot/perl-Log-Report'...
$ git fetch origin 0af525bb39f4f3c1a8245aaf7566ba3f4366d755:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Log-Report
 * [new ref]         0af525bb39f4f3c1a8245aaf7566ba3f4366d755 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0af525b 1.40 bump