$ git clone -n https://src.fedoraproject.org/rpms/rust-krun-sys.git /var/lib/mock/f41-build-side-1-3137253-39791/root/chroot_tmpdir/scmroot/rust-krun-sys
Cloning into '/var/lib/mock/f41-build-side-1-3137253-39791/root/chroot_tmpdir/scmroot/rust-krun-sys'...
$ git fetch origin f4de61208b266d8af2d5084119849204bb80b486:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-krun-sys
 * [new ref]         f4de61208b266d8af2d5084119849204bb80b486 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f4de612 Initial import; Fixes: RHBZ#2311966