$ git clone -n https://src.fedoraproject.org/rpms/rust-bumpalo.git /var/lib/mock/f37-build-side-31-rust-devel-128476-7322/root/chroot_tmpdir/scmroot/rust-bumpalo
Cloning into '/var/lib/mock/f37-build-side-31-rust-devel-128476-7322/root/chroot_tmpdir/scmroot/rust-bumpalo'...
$ git reset --hard e9c8703712a1a0cc4e501345bc09796ea2e31ce5
HEAD is now at e9c8703 Update to version 3.11.1; Fixes RHBZ#2135949