$ git clone -n https://src.fedoraproject.org/rpms/plasma-milou.git /var/lib/mock/f39-build-1566971-37592/root/chroot_tmpdir/scmroot/plasma-milou
Cloning into '/var/lib/mock/f39-build-1566971-37592/root/chroot_tmpdir/scmroot/plasma-milou'...
$ git fetch origin 45dc15af09f60edba43c779a1f43dfcac4d76c37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-milou
 * [new ref]         45dc15af09f60edba43c779a1f43dfcac4d76c37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 45dc15a Update to 5.27.8