$ git clone -n https://src.fedoraproject.org/rpms/python-os-testr.git /var/lib/mock/f40-build-2052018-49062/root/chroot_tmpdir/scmroot/python-os-testr
Cloning into '/var/lib/mock/f40-build-2052018-49062/root/chroot_tmpdir/scmroot/python-os-testr'...
$ git fetch origin 269f4e23f8a6db396351abff479a1430db0b0896:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-os-testr
 * [new ref]         269f4e23f8a6db396351abff479a1430db0b0896 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 269f4e2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild