$ git clone -n https://src.fedoraproject.org/rpms/golang-github-jbenet-context.git /var/lib/mock/f39-build-1647790-40440/root/chroot_tmpdir/scmroot/golang-github-jbenet-context
Cloning into '/var/lib/mock/f39-build-1647790-40440/root/chroot_tmpdir/scmroot/golang-github-jbenet-context'...
$ git fetch origin d134f2bd5b7482d80ab75ee886ae84832b90969f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-jbenet-context
 * [new ref]         d134f2bd5b7482d80ab75ee886ae84832b90969f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d134f2b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild