$ git clone -n https://src.fedoraproject.org/rpms/perl-Dir-Manifest.git /var/lib/mock/f45-build-23192-596/root/chroot_tmpdir/scmroot/perl-Dir-Manifest
Cloning into '/var/lib/mock/f45-build-23192-596/root/chroot_tmpdir/scmroot/perl-Dir-Manifest'...
$ git fetch origin 1467931315ce72b22a4e57425c5f222dd9ec4108:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Dir-Manifest
 * [new ref]         1467931315ce72b22a4e57425c5f222dd9ec4108 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1467931 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild