$ git clone -n https://src.fedoraproject.org/rpms/perl-Mango.git /var/lib/mock/f45-build-24667-605/root/chroot_tmpdir/scmroot/perl-Mango
Cloning into '/var/lib/mock/f45-build-24667-605/root/chroot_tmpdir/scmroot/perl-Mango'...
$ git fetch origin be9c067d5e1ee0070f4f18eca6439b4c423fe677:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Mango
 * [new ref]         be9c067d5e1ee0070f4f18eca6439b4c423fe677 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be9c067 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild