$ git clone -n https://src.fedoraproject.org/rpms/golang-github-mattn-isatty.git /var/lib/mock/f45-build-12232-440/root/chroot_tmpdir/scmroot/golang-github-mattn-isatty
Cloning into '/var/lib/mock/f45-build-12232-440/root/chroot_tmpdir/scmroot/golang-github-mattn-isatty'...
$ git fetch origin f5b350596f7a766b4af39014d458dd3f2c3ce0df:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-mattn-isatty
 * [new ref]         f5b350596f7a766b4af39014d458dd3f2c3ce0df -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5b3505 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild