$ git clone -n https://src.fedoraproject.org/rpms/krita.git /var/lib/mock/f40-build-2721168-73074/root/chroot_tmpdir/scmroot/krita
Cloning into '/var/lib/mock/f40-build-2721168-73074/root/chroot_tmpdir/scmroot/krita'...
$ git fetch origin f277a8c7314fb25ed89ab9e575f7bbbdfe43f503:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/krita
 * [new ref]         f277a8c7314fb25ed89ab9e575f7bbbdfe43f503 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f277a8c Rebuild (libunibreak)