$ git clone -n https://src.fedoraproject.org/rpms/kf6-kbookmarks.git /var/lib/mock/f41-build-838223-159635/root/chroot_tmpdir/scmroot/kf6-kbookmarks
Cloning into '/var/lib/mock/f41-build-838223-159635/root/chroot_tmpdir/scmroot/kf6-kbookmarks'...
$ git fetch origin 047114301185a8987c9d1f11d18787f9a33ca9ea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kbookmarks
 * [new ref]         047114301185a8987c9d1f11d18787f9a33ca9ea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0471143 6.5.0