$ git clone -n https://src.fedoraproject.org/rpms/erlang-chronos.git /var/lib/mock/f45-build-8241-382/root/chroot_tmpdir/scmroot/erlang-chronos
Cloning into '/var/lib/mock/f45-build-8241-382/root/chroot_tmpdir/scmroot/erlang-chronos'...
$ git fetch origin 626d8bf811554ecb8f9bddc62f59d877fc79a1d7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-chronos
 * [new ref]         626d8bf811554ecb8f9bddc62f59d877fc79a1d7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 626d8bf Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild