$ git clone -n https://src.fedoraproject.org/rpms/newsboat.git /var/lib/mock/f40-build-1643181-24171/root/chroot_tmpdir/scmroot/newsboat
Cloning into '/var/lib/mock/f40-build-1643181-24171/root/chroot_tmpdir/scmroot/newsboat'...
$ git fetch origin 4ebffd6b94b9394fae5d2e917d67c3ae2776c23b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/newsboat
 * [new ref]         4ebffd6b94b9394fae5d2e917d67c3ae2776c23b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4ebffd6 Update to version 2.36 (rhbz#2293808)