$ git clone -n https://src.fedoraproject.org/rpms/ghc-hxt-regex-xmlschema.git /var/lib/mock/f45-build-10426-416/root/chroot_tmpdir/scmroot/ghc-hxt-regex-xmlschema
Cloning into '/var/lib/mock/f45-build-10426-416/root/chroot_tmpdir/scmroot/ghc-hxt-regex-xmlschema'...
$ git fetch origin eebbdc1ebbef9faf54de89dd41816f184f7c6b46:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-hxt-regex-xmlschema
 * [new ref]         eebbdc1ebbef9faf54de89dd41816f184f7c6b46 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eebbdc1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild