$ git clone -n https://src.fedoraproject.org/rpms/rust-salsa20.git /var/lib/mock/f38-build-side-43-rust-devel-1410589-31420/root/chroot_tmpdir/scmroot/rust-salsa20
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1410589-31420/root/chroot_tmpdir/scmroot/rust-salsa20'...
$ git fetch origin 269130b0fc1c68c09bc17f2fdbb2137d7ebc1254:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-salsa20
 * [new ref]         269130b0fc1c68c09bc17f2fdbb2137d7ebc1254 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 269130b Update to version 0.10.2; Fixes RHBZ#2052876