$ git clone -n https://src.fedoraproject.org/rpms/golang-github-xhit-str2duration2.git /var/lib/mock/f45-build-12605-442/root/chroot_tmpdir/scmroot/golang-github-xhit-str2duration2
Cloning into '/var/lib/mock/f45-build-12605-442/root/chroot_tmpdir/scmroot/golang-github-xhit-str2duration2'...
$ git fetch origin b3a47b4634ac6cb8f613944bd63f44629b97bcad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-xhit-str2duration2
 * [new ref]         b3a47b4634ac6cb8f613944bd63f44629b97bcad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b3a47b4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild