$ git clone -n https://src.fedoraproject.org/rpms/ghc-hashable.git /var/lib/mock/f45-build-10361-416/root/chroot_tmpdir/scmroot/ghc-hashable
Cloning into '/var/lib/mock/f45-build-10361-416/root/chroot_tmpdir/scmroot/ghc-hashable'...
$ git fetch origin 3c15bc718869a62b3894f013ff04f17db2c9e8af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-hashable
 * [new ref]         3c15bc718869a62b3894f013ff04f17db2c9e8af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3c15bc7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild