$ git clone -n https://src.fedoraproject.org/rpms/rust-tinyvec.git /var/lib/mock/f40-build-1476577-23795/root/chroot_tmpdir/scmroot/rust-tinyvec
Cloning into '/var/lib/mock/f40-build-1476577-23795/root/chroot_tmpdir/scmroot/rust-tinyvec'...
$ git fetch origin 36503cb4f026e78691d38a040be2e55f188984f0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tinyvec
 * [new ref]         36503cb4f026e78691d38a040be2e55f188984f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 36503cb Update to version 1.7.0; Fixes RHBZ#2296048