$ git clone -n https://src.fedoraproject.org/rpms/ecdsautils.git /var/lib/mock/f45-build-7935-371/root/chroot_tmpdir/scmroot/ecdsautils
Cloning into '/var/lib/mock/f45-build-7935-371/root/chroot_tmpdir/scmroot/ecdsautils'...
$ git fetch origin 5c58b672f88e4b235394528d364c5364b45e1729:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ecdsautils
 * [new ref]         5c58b672f88e4b235394528d364c5364b45e1729 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c58b67 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild