$ git clone -n https://src.fedoraproject.org/rpms/ksshaskpass.git /var/lib/mock/f40-build-2087298-50155/root/chroot_tmpdir/scmroot/ksshaskpass
Cloning into '/var/lib/mock/f40-build-2087298-50155/root/chroot_tmpdir/scmroot/ksshaskpass'...
$ git fetch origin b4e2f852509acbe4fbe1b7391b95dbdf834d5f84:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ksshaskpass
 * [new ref]         b4e2f852509acbe4fbe1b7391b95dbdf834d5f84 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4e2f85 fix: upload missing sources