$ git clone -n https://src.fedoraproject.org/rpms/rust-similar-asserts.git /var/lib/mock/f38-build-side-42-init-devel-1394095-31050/root/chroot_tmpdir/scmroot/rust-similar-asserts
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1394095-31050/root/chroot_tmpdir/scmroot/rust-similar-asserts'...
$ git fetch origin ba35d13f43cf70ce5ff03a1d0e9ee8bb029d9199:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-similar-asserts
 * [new ref]         ba35d13f43cf70ce5ff03a1d0e9ee8bb029d9199 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba35d13 Update to version 1.5.0; Fixes RHBZ#2232987