$ git clone -n https://src.fedoraproject.org/rpms/rust-smallstr.git /var/lib/mock/f38-build-side-43-rust-devel-1410641-31421/root/chroot_tmpdir/scmroot/rust-smallstr
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1410641-31421/root/chroot_tmpdir/scmroot/rust-smallstr'...
$ git fetch origin 37248b7b7b92bd55d332c14801d34d3fa82043e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-smallstr
 * [new ref]         37248b7b7b92bd55d332c14801d34d3fa82043e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37248b7 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild