$ git clone -n https://src.fedoraproject.org/rpms/rust-gimoji.git /var/lib/mock/f38-build-side-43-rust-devel-1411680-31436/root/chroot_tmpdir/scmroot/rust-gimoji
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1411680-31436/root/chroot_tmpdir/scmroot/rust-gimoji'...
$ git fetch origin 3a3604b4b9658e91a9b1ef886128b05dc0e963a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gimoji
 * [new ref]         3a3604b4b9658e91a9b1ef886128b05dc0e963a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a3604b Update to version 0.6.1; Fixes RHBZ#2232779