$ git clone -n https://src.fedoraproject.org/rpms/R-askpass.git /var/lib/mock/f38-build-723900-99307/root/chroot_tmpdir/scmroot/R-askpass
Cloning into '/var/lib/mock/f38-build-723900-99307/root/chroot_tmpdir/scmroot/R-askpass'...
$ git fetch origin 34f6b667d635a24da2573f279ea0a9d504595b8b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-askpass
 * [new ref]         34f6b667d635a24da2573f279ea0a9d504595b8b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 34f6b66 R-maint-sig mass rebuild