$ git clone -n https://src.fedoraproject.org/rpms/golang-gopkg-tylerb-is-1.git /var/lib/mock/f45-build-12693-443/root/chroot_tmpdir/scmroot/golang-gopkg-tylerb-is-1
Cloning into '/var/lib/mock/f45-build-12693-443/root/chroot_tmpdir/scmroot/golang-gopkg-tylerb-is-1'...
$ git fetch origin a961824b721290140d3a12f97f694db114a77745:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-gopkg-tylerb-is-1
 * [new ref]         a961824b721290140d3a12f97f694db114a77745 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a961824 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild