$ git clone -n https://src.fedoraproject.org/rpms/golang-github-marcinbor85-gohex.git /var/lib/mock/f45-build-12201-439/root/chroot_tmpdir/scmroot/golang-github-marcinbor85-gohex
Cloning into '/var/lib/mock/f45-build-12201-439/root/chroot_tmpdir/scmroot/golang-github-marcinbor85-gohex'...
$ git fetch origin 84538e43fc8f739bd6c7e2fa70dbc2119a61757b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-marcinbor85-gohex
 * [new ref]         84538e43fc8f739bd6c7e2fa70dbc2119a61757b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84538e4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild