$ git clone -n https://src.fedoraproject.org/rpms/plasma-desktop.git /var/lib/mock/f41-build-854615-166904/root/chroot_tmpdir/scmroot/plasma-desktop
Cloning into '/var/lib/mock/f41-build-854615-166904/root/chroot_tmpdir/scmroot/plasma-desktop'...
$ git fetch origin bd7a8c2e3da3df48d794d480840895e68945206a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-desktop
 * [new ref]         bd7a8c2e3da3df48d794d480840895e68945206a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bd7a8c2 Fix 6.1.90 crash issue