$ git clone -n https://src.fedoraproject.org/rpms/libksane.git /var/lib/mock/f42-build-3403120-45134/root/chroot_tmpdir/scmroot/libksane
Cloning into '/var/lib/mock/f42-build-3403120-45134/root/chroot_tmpdir/scmroot/libksane'...
$ git fetch origin 392f250267eea2dce81e8e189f17dd589323161c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libksane
 * [new ref]         392f250267eea2dce81e8e189f17dd589323161c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 392f250 24.12.3