$ git clone -n https://src.fedoraproject.org/rpms/guvcview.git /var/lib/mock/f41-build-side-1-2999259-36239/root/chroot_tmpdir/scmroot/guvcview
Cloning into '/var/lib/mock/f41-build-side-1-2999259-36239/root/chroot_tmpdir/scmroot/guvcview'...
$ git fetch origin 3eafd3d7f5fbadfc5456afa20de9375ca1a22cbc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/guvcview
 * [new ref]         3eafd3d7f5fbadfc5456afa20de9375ca1a22cbc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3eafd3d Rebuild for ffmpeg 7