$ git clone -n https://src.fedoraproject.org/rpms/plasma-mediacenter.git /var/lib/mock/f41-build-side-1-2753479-31224/root/chroot_tmpdir/scmroot/plasma-mediacenter
Cloning into '/var/lib/mock/f41-build-side-1-2753479-31224/root/chroot_tmpdir/scmroot/plasma-mediacenter'...
$ git fetch origin 5ce5de78fe7b08468a39a378ca2d39d49301c1c6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-mediacenter
 * [new ref]         5ce5de78fe7b08468a39a378ca2d39d49301c1c6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5ce5de7 convert GPLv2 license to SPDX