$ git clone -n https://src.fedoraproject.org/rpms/rust-reqwest.git /var/lib/mock/f41-build-side-1-2785168-32574/root/chroot_tmpdir/scmroot/rust-reqwest
Cloning into '/var/lib/mock/f41-build-side-1-2785168-32574/root/chroot_tmpdir/scmroot/rust-reqwest'...
$ git fetch origin 5110074eeb01abd9ef58235d2934934656f8aa4a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-reqwest
 * [new ref]         5110074eeb01abd9ef58235d2934934656f8aa4a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5110074 Update to version 0.12.7; Fixes RHBZ#2306088