$ git clone -n https://src.fedoraproject.org/rpms/plasma-thunderbolt.git /var/lib/mock/f39-build-1583885-38129/root/chroot_tmpdir/scmroot/plasma-thunderbolt
Cloning into '/var/lib/mock/f39-build-1583885-38129/root/chroot_tmpdir/scmroot/plasma-thunderbolt'...
$ git fetch origin 53fc9edac4927a0af09b46585e019a2f318bd889:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-thunderbolt
 * [new ref]         53fc9edac4927a0af09b46585e019a2f318bd889 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 53fc9ed 5.27.9