$ git clone -n https://src.fedoraproject.org/rpms/rust-blazesym-c.git /var/lib/mock/f41-build-847998-164378/root/chroot_tmpdir/scmroot/rust-blazesym-c
Cloning into '/var/lib/mock/f41-build-847998-164378/root/chroot_tmpdir/scmroot/rust-blazesym-c'...
$ git fetch origin 382cd097cb0c38d5f968926f08e5d3ea6e2e5482:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-blazesym-c
 * [new ref]         382cd097cb0c38d5f968926f08e5d3ea6e2e5482 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 382cd09 Drop redundant pkgconfig dependency