$ git clone -n https://src.fedoraproject.org/rpms/rust-assert-str.git /var/lib/mock/f45-build-40202-769/root/chroot_tmpdir/scmroot/rust-assert-str
Cloning into '/var/lib/mock/f45-build-40202-769/root/chroot_tmpdir/scmroot/rust-assert-str'...
$ git fetch origin 0b694a8cd76595e12a0eb3f6f90b73bbebbdcee2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-assert-str
 * [new ref]         0b694a8cd76595e12a0eb3f6f90b73bbebbdcee2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b694a8 Regenerate with rust2rpm v28