$ git clone -n https://src.fedoraproject.org/rpms/golang-github-nwidger-jsoncolor.git /var/lib/mock/f45-build-12434-442/root/chroot_tmpdir/scmroot/golang-github-nwidger-jsoncolor
Cloning into '/var/lib/mock/f45-build-12434-442/root/chroot_tmpdir/scmroot/golang-github-nwidger-jsoncolor'...
$ git fetch origin 374fe8bd34d8937f4b544f991b17c794f7b2da85:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-nwidger-jsoncolor
 * [new ref]         374fe8bd34d8937f4b544f991b17c794f7b2da85 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 374fe8b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild