$ git clone -n https://src.fedoraproject.org/rpms/libmicrodns.git /var/lib/mock/f45-build-16544-487/root/chroot_tmpdir/scmroot/libmicrodns
Cloning into '/var/lib/mock/f45-build-16544-487/root/chroot_tmpdir/scmroot/libmicrodns'...
$ git fetch origin ea5acbd7dfb7bb63f3371bf989657d80e2efb57a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmicrodns
 * [new ref]         ea5acbd7dfb7bb63f3371bf989657d80e2efb57a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea5acbd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild