$ git clone -n https://src.fedoraproject.org/rpms/kpipewire.git /var/lib/mock/f40-build-2194476-51498/root/chroot_tmpdir/scmroot/kpipewire
Cloning into '/var/lib/mock/f40-build-2194476-51498/root/chroot_tmpdir/scmroot/kpipewire'...
$ git fetch origin f450eca03c5bb48dc08345c93f4155a721db239e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kpipewire
 * [new ref]         f450eca03c5bb48dc08345c93f4155a721db239e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f450eca 5.91.0