$ git clone -n https://src.fedoraproject.org/rpms/rust-bumpalo.git /var/lib/mock/f38-build-side-42-init-devel-453075-21995/root/chroot_tmpdir/scmroot/rust-bumpalo
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-453075-21995/root/chroot_tmpdir/scmroot/rust-bumpalo'...
$ git reset --hard 1d40a3186e703bb9e37125fbde2f76f2edd204f8
HEAD is now at 1d40a31 Update to version 3.12.0; Fixes RHBZ#2161735