$ git clone -n https://src.fedoraproject.org/rpms/rust-imago.git /var/lib/mock/f42-build-3231208-41191/root/chroot_tmpdir/scmroot/rust-imago
Cloning into '/var/lib/mock/f42-build-3231208-41191/root/chroot_tmpdir/scmroot/rust-imago'...
$ git fetch origin 6794028e9b0928e0a9cb816d53ad0ea5cbf73d10:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-imago
 * [new ref]         6794028e9b0928e0a9cb816d53ad0ea5cbf73d10 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6794028 Initial import (fedora#2338639).