$ git clone -n https://src.fedoraproject.org/rpms/ghc-http-common.git /var/lib/mock/f45-build-10419-416/root/chroot_tmpdir/scmroot/ghc-http-common
Cloning into '/var/lib/mock/f45-build-10419-416/root/chroot_tmpdir/scmroot/ghc-http-common'...
$ git fetch origin 32c05f39b591672ea97431fa51f373fc44e6362e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-http-common
 * [new ref]         32c05f39b591672ea97431fa51f373fc44e6362e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 32c05f3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild