$ git clone -n https://src.fedoraproject.org/rpms/ghc-base16-bytestring.git /var/lib/mock/f45-build-10009-412/root/chroot_tmpdir/scmroot/ghc-base16-bytestring
Cloning into '/var/lib/mock/f45-build-10009-412/root/chroot_tmpdir/scmroot/ghc-base16-bytestring'...
$ git fetch origin 906ac0da0372fdd67d6acd5710bc75b8cee820b9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-base16-bytestring
 * [new ref]         906ac0da0372fdd67d6acd5710bc75b8cee820b9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 906ac0d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild