$ git clone -n https://src.fedoraproject.org/rpms/golang-github-briandowns-spinner.git /var/lib/mock/f45-build-11768-434/root/chroot_tmpdir/scmroot/golang-github-briandowns-spinner
Cloning into '/var/lib/mock/f45-build-11768-434/root/chroot_tmpdir/scmroot/golang-github-briandowns-spinner'...
$ git fetch origin 7ec62552db26594111fc83e4da616e63ad701902:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-briandowns-spinner
 * [new ref]         7ec62552db26594111fc83e4da616e63ad701902 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7ec6255 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild