$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Log-Log4perl.git /var/lib/mock/f45-build-26738-619/root/chroot_tmpdir/scmroot/perl-Test-Log-Log4perl
Cloning into '/var/lib/mock/f45-build-26738-619/root/chroot_tmpdir/scmroot/perl-Test-Log-Log4perl'...
$ git fetch origin d2e73d9dc39653f3af3d6114fcb45661081f800a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Log-Log4perl
 * [new ref]         d2e73d9dc39653f3af3d6114fcb45661081f800a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2e73d9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild