$ git clone -n https://src.fedoraproject.org/rpms/golang-github-sacloud-http.git /var/lib/mock/f45-build-12470-442/root/chroot_tmpdir/scmroot/golang-github-sacloud-http
Cloning into '/var/lib/mock/f45-build-12470-442/root/chroot_tmpdir/scmroot/golang-github-sacloud-http'...
$ git fetch origin 27600c80c5bf26cb3fc3ac6bde8a5ab3405c5b10:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-sacloud-http
 * [new ref]         27600c80c5bf26cb3fc3ac6bde8a5ab3405c5b10 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 27600c8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild