$ git clone -n https://src.fedoraproject.org/rpms/golang-github-modern-reflect2.git /var/lib/mock/f39-build-1503832-34988/root/chroot_tmpdir/scmroot/golang-github-modern-reflect2
Cloning into '/var/lib/mock/f39-build-1503832-34988/root/chroot_tmpdir/scmroot/golang-github-modern-reflect2'...
$ git fetch origin 85b6bea0b41d5f2aebe78c9f9adfa416ade2dd53:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-modern-reflect2
 * [new ref]         85b6bea0b41d5f2aebe78c9f9adfa416ade2dd53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 85b6bea Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild