$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Manifest.git /var/lib/mock/f45-build-26736-619/root/chroot_tmpdir/scmroot/perl-Test-Manifest
Cloning into '/var/lib/mock/f45-build-26736-619/root/chroot_tmpdir/scmroot/perl-Test-Manifest'...
$ git fetch origin 09eac12fa7bd15e037ccfdde9fc545860ef2c87f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Manifest
 * [new ref]         09eac12fa7bd15e037ccfdde9fc545860ef2c87f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 09eac12 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild